Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f4bb559f2052e77…

MALICIOUS

PDF

34.2 KB Created: 2020-08-20 20:39:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 09f9f3f452fb0028c11978bf82940f74 SHA-1: 395d8b27c0e52664a75771a20a408d228f869858 SHA-256: 7f4bb559f2052e77130d6539abe2506be8d7ad9a7f348cbe16e9d8e57289564d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, including one to a known malicious redirector at 'https://ttraff.cc/pify?keyword=passive+causative+exercises+pdf+with+answers'. This redirector likely leads to a phishing or malware download page. The document also contains a large number of links to other PDFs hosted on Shopify, suggesting a link farm or SEO manipulation tactic to drive traffic to malicious content. No scripts were extracted from this sample.

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/pify?keyword=passive+causative+exercises+pdf+with+answers In PDF document text
    • http://files.redriverretentionauthority.net/uploads/1/3/0/7/130776712/xukulimoguxal.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7799/9519/files/6760925901.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9340/8409/files/whatsapp_status_video_bhojpuri_dj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7752/4888/files/kofezabazojowag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6352/5029/files/tejajoja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3437/0471/files/pdf_to_word_apk_converter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1421/8151/files/toburunobisulixijugawesob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4855/0050/files/zorezutubesosazof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1746/0120/files/mivutunow.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 4

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003dc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3DC0 5204 bytes
SHA-256: 1ad2aa567a9b6a8b51071322d045f4ea65bfea454d06db1a4dbf80368ac37e2c
font_01_sfnt_off00004f7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F7A 8932 bytes
SHA-256: 5238eaaca868a8f9facca5a030d29543f5e673baa8a9d29c850809377aa10b13
font_02_sfnt_off00006e08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E08 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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