Malicious PDF — malware analysis report

Static analysis result for SHA-256 4887e3370ce03cc7…

MALICIOUS

PDF

44.6 KB Created: 2020-08-19 03:49:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 79a5879e1f2348569de37d3475c293be SHA-1: b99900ca554999975b67bd58ac02e5d13620f971 SHA-256: 4887e3370ce03cc79561f8100c137c64fa7065480d7531b97eddb3a28dad80eb
214 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link and a large number of embedded links, many pointing to Shopify domains, suggesting a link farm or redirection tactic. The document body contains a lure related to a 'Nokia android phone 5000' and the embedded URL `https://ttraff.cc/pify?keyword=nokia+android+phone+5000` further supports this. The heuristic `SE_CALLBACK_LURE` indicates a phishing or tech-support scam context. The primary malicious IOC is the redirector URL.

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) 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=nokia+android+phone+5000 In PDF document text
    • http://files.newyorkthespians.org/uploads/1/3/1/0/131070173/7cbe873e71d.pdfIn PDF document text
    • http://files.thedemontage.com/uploads/1/3/0/9/130969573/govigazi.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/1/0435/2396/5079/files/database_system_concepts_6th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0278/1083/files/xofosojezagebevabenigete.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8118/6971/files/45702555087.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4180/0860/files/computer_age_statistical_inference_algorithms_evidence_and_data_science.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2568/6951/files/razubiviwul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2728/1558/files/fraud_examination_5th_edition_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3156/8277/files/vafaterixeze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3196/9438/files/vakupidokukuvijakesu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8125/3535/files/wagetesagegajosasolipixo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3823/6062/files/71416011219.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1009/6284/files/69007350740.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4641/1162/files/totejekapubuvepub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3066/4600/files/92890939100.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3756/4838/files/pizegemexuxetebim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2042/5115/files/kuxifuzasis.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006f69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F69 5136 bytes
SHA-256: 45e3f5c09470b7d72566ae78fd946e626d2d14fb0e4573599fe44abbd5bcba24
font_01_sfnt_off000080d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80D8 10600 bytes
SHA-256: 775666577310625e863b882be740a9412c8b35eec03bcfeed9db983879be61f5