Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa8cf942f9699045…

MALICIOUS

PDF

44.3 KB Created: 2020-08-09 23:39:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1dca18f5ac8617e6a78ae7cb75993397 SHA-1: b3e748dab983fff32173ef843de7eed43701b485 SHA-256: aa8cf942f96990457da688cee3589de09c644d0ec2a2609f6f0bc39ffa7cab03
194 Risk Score

Malware Insights

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

The PDF contains a link farm designed to lure victims with a 'speed keto meal plan pdf' keyword, redirecting to a malicious URL. The ML classifier strongly indicates maliciousness, and the PDF structure suggests it's part of a campaign to drive traffic to malicious infrastructure. The embedded URLs point to a redirector and a large number of other PDFs hosted on Shopify, likely for SEO manipulation.

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/pify?keyword=speed+keto+meal+plan+pdf In PDF document text
    • http://files.onoff-oddob.com/uploads/1/3/0/9/130969728/1367871.pdfIn PDF document text
    • http://files.treasurelakesfish.com/uploads/1/3/0/7/130775862/f2341.pdfIn PDF document text
    • http://files.noeky1980photography.com/uploads/1/3/0/7/130740073/gowudor.pdfIn PDF document text
    • http://files.mackeiganmarketing.com/uploads/1/3/1/4/131452732/sodopafesub.pdfIn PDF document text
    • http://files.coefyouth.com/uploads/1/3/0/8/130815228/vibagaxufot.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/1/0428/4389/8019/files/aging_definition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7491/0376/files/rusijedomijepogaxas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8865/0142/files/70960570030.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5996/0218/files/venasevanibo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3015/1330/files/can_you_feel_the_love_tonight_piano_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4233/3091/files/3516200432.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6989/8913/files/xakakojedasopifawinixolix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9035/3051/files/acids_and_bases_file.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zeperilifo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8694/6206/files/68624127974.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zodotuxufaliga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3732/6488/files/misivirip.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_off00006f6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F6D 5080 bytes
SHA-256: a48bf19c93a5531c35ea969a2284f5518ac1ba8a5cdfafbce7db5e8ca46355e9
font_01_sfnt_off000080ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80AC 10288 bytes
SHA-256: 039648a8508d758e8f76afbce02de82cb1022a539248b43008f06030876cf7ef

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