Malicious PDF — malware analysis report

Static analysis result for SHA-256 2af3f8e49f8b1bd5…

MALICIOUS

PDF

40.7 KB Created: 2020-08-15 17:16:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 40535f629a640c5b2d14e8603dca39d9 SHA-1: f986ad12c34ac902ac7e9d1d22ab7381af9164e5 SHA-256: 2af3f8e49f8b1bd504a42bc231a92e7378ea44583e688a17d5dcc16578730c1a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a link that redirects to a known malicious domain, disguised with a search query related to medication dosage. This indicates a social engineering lure to direct users to malicious content. The PDF also contains a large number of external links, suggesting a link farm or SEO poisoning tactic. The embedded URL points to a redirector, which is a common technique for delivering malware or phishing pages.

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.ru/wb?keyword=cara%20menghitung%20dosis%20obat%20anak%20pdf In PDF document text
    • http://files.youthinequalityjustice.org/uploads/1/3/1/4/131407968/067e12a8.pdfIn PDF document text
    • http://files.biorbnz.co.nz/uploads/1/3/0/9/130969746/9273937.pdfIn PDF document text
    • http://files.usaggear.com/uploads/1/3/1/0/131070230/rerumota_gurivodajop.pdfIn PDF document text
    • http://files.ohmyrockport.com/uploads/1/3/0/9/130969448/vanido-sorijulav.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/1/0437/1818/1013/files/lixugomu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4899/2930/files/24435749552.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6626/7550/files/wamabofesoge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0849/8591/files/savuwekalefesuvedexopuko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8266/1532/files/mawifafimudejemux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4310/1591/files/6209173835.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1623/1840/files/59930609205.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9309/6600/files/napuwadomu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8330/8955/files/atomic_number_and_mass_of_elements.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000626a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x626A 5532 bytes
SHA-256: 5ea03ca9690b15126bf3be319ad53daee861d3a9710ae3154089b7d587c483ef
font_01_sfnt_off00007509.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7509 9640 bytes
SHA-256: af3ff1ba24c8a7ea304c95a6b30e1614fd7ae4403b57ed7cb5f8a8c52f41b02d

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