Malicious PDF — malware analysis report

Static analysis result for SHA-256 36721e20df986279…

MALICIOUS

PDF

46.7 KB Created: 2020-08-23 07:41:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4f8548913fd752b0553992ff0fa58043 SHA-1: 165ac3249c34bc40d9c338f98ea2adb4d2300a50 SHA-256: 36721e20df9862794fcc0bae5684d5d8994ce43bcffbc148fd50a5e9bc3964ab
262 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a lure related to financial transactions, specifically an 'Aviva drawdown application form', and includes a call-to-action button. It also contains a mass external PDF link farm, with one link pointing to a known malicious redirector. The primary malicious link is https://ttraff.cc/pify?keyword=aviva+drawdown+application+form, which is likely used to redirect the user to a phishing or malware distribution site. The document body is heavily corrupted, but the presence of the malicious redirector and the link farm strongly suggest a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 8

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/pify?keyword=aviva+drawdown+application+form In PDF document text
    • http://files.planninginblackandwhite.com/uploads/1/3/2/7/132710655/bobuzugipiz_renele_litazafurusagop.pdfIn PDF document text
    • http://files.susandieterlen.com/uploads/1/3/0/7/130739883/ed099.pdfIn PDF document text
    • http://files.moonlightgrahammusic.com/uploads/1/3/1/6/131637797/kofazegesig-sakapagogubad-pulagurigoriz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0457/8620/2278/files/xumimarimorokusuzizufabo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8510/2237/files/graphs_in_access_reports.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/3348/1636/files/post_office_bank_account_opening_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7456/7833/files/carl_jung_map_of_the_soul_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1760/1181/files/xivikiwiravobivevapekifa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/35022180152.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4388/1114/files/69363884647.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3830/1590/files/padikidakarid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1227/5870/files/fisusoder.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6060/9692/files/xiramovofuwimaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5391/6065/files/code_review_spreadsheet_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0652/4566/files/deathstroke_sword_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1095/6196/files/spring_boot_tutorial_tutorialspoint.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C4D 4932 bytes
SHA-256: a7e80fec0c5a582d62dc9288bbed15fa5d576d06d6cc8c1ec5bf22a18e0555ef
font_01_sfnt_off00007d02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D02 10300 bytes
SHA-256: 4fb90a35b03026de3c62856ae97a8a9b80e4b5ed683b26226721e1c7935e1b47
font_02_sfnt_off00009fd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9FD6 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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