Malicious PDF — malware analysis report

Static analysis result for SHA-256 1545a74a48d354d5…

MALICIOUS

PDF

45.2 KB Created: 2020-08-14 22:50:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9e95321df2639fe7661a88346dbbece9 SHA-1: 541a96de4127f6d857b3403fd6e6a6f12313e584 SHA-256: 1545a74a48d354d5f358ffab50d62a3e3ac946f9f6e26b92d43b2dd06745ef0f
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector URL (https://ttraff.cc/pify?keyword=appetite+stimulant+for+dogs+liquid+form). The document body, though heavily obfuscated, contains this same URL, suggesting an attempt to lure users to malicious infrastructure. The presence of a large number of external PDF links also indicates a link farm, a common tactic for SEO poisoning or distributing malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • 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) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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=appetite+stimulant+for+dogs+liquid+form In PDF document text
    • http://files.annealldread.com/uploads/1/3/0/7/130776350/954394.pdfIn PDF document text
    • http://files.leblancsdistributingcompany.com/uploads/1/3/1/4/131454549/wukoxek-notizeb-jikazafox.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/1/0435/8720/7327/files/nutopatorok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4168/5665/files/fakerar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1556/8546/files/hirayama_autoclave_service_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3988/1376/files/9_regions_of_the_abdomen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3702/4668/files/calligraphy_font_styles.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8929/7568/files/xotepulixemukenaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4609/2443/files/oxford_phonics_world_1_teacher_s_book_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9825/7048/files/mobegotaromunixofijes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7929/3338/files/givupu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0881/9349/files/25868441496.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/3831/9527/files/gasufogupa.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 1

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_off00007156.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7156 5476 bytes
SHA-256: 6ddb42dad05aa85b4105fbe3c39b4b6e8000319d4f7fd8433fa104133908655e
font_01_sfnt_off000083d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83D9 10584 bytes
SHA-256: 70ffdf8e63353002aa9f61f7fc2b4d4c69816222ecb543e9642fae24b2101c3e

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