Malicious PDF — malware analysis report

Static analysis result for SHA-256 4103dc06fa053c23…

MALICIOUS

PDF

49.9 KB Created: 2020-08-04 01:40:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 95989dc86110d32c02d94b6c50e89ac9 SHA-1: 184e9ff5cf398a3a2b96d0525f030cd74b14e486 SHA-256: 4103dc06fa053c23b21ddc446e4544f9d7a8fc152a867b171c7c48a02cf84a9e
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, characteristic of a link farm or SEO poisoning attack. One of the primary links, 'https://ttraff.cc/wb?keyword=economic%20development%20theory%20pdf', is identified as a malicious redirector. The document body, though heavily obfuscated, contains this URL and other Shopify-hosted PDF links, suggesting a coordinated effort to drive traffic to malicious sites under the guise of providing PDF documents.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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/wb?keyword=economic%20development%20theory%20pdf In PDF document text
    • http://files.aussales.net/uploads/1/3/1/3/131379049/biwavomag-tojunomax.pdfIn PDF document text
    • http://jekapovi.leosusa.com/uploads/1/3/0/7/130775612/4137578.pdfIn PDF document text
    • http://files.crescentmoonconjure.com/uploads/1/3/0/7/130775557/sibosidifiro.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3106/8825/files/smt_apocalypse_walkthrough.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8148/2919/files/vemekuvivapuzod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2617/6407/files/dissociative_identity_disorder_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9465/4632/files/mekasifamof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0846/6845/files/pictures_on_chromecast.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8534/8510/files/rug_doctor_instructions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1119/3501/files/21749246200.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0595/9574/files/wordpress_get_featured_image_url.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6019/1637/files/nibizinogamoderalojojaman.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1690/3080/files/74201366920.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0248/6180/files/63345334468.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 2

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008480.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8480 5128 bytes
SHA-256: 8de4b6848b580ae2c49413218eac480606171cf8a1280072e241af2be5c69b74
font_01_sfnt_off000095db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95DB 10896 bytes
SHA-256: 8c6c70c594dd8290b2323a8e6cf767506ced278a8112e3f6797f9927a924b1c3

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