Malicious PDF — malware analysis report

Static analysis result for SHA-256 8df0e46594a16fa8…

MALICIOUS

PDF

52.4 KB Created: 2020-08-11 23:29:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a9bb43a004e82a74c8f830be2ffda5a3 SHA-1: e7132da2778d6ad3737342818a592658dc286078 SHA-256: 8df0e46594a16fa8a28be85e0c8b6d2028d32b5d655d67363c2bd17918f2bdcc
194 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as educational material. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM indicate the document's primary purpose is to drive traffic to potentially harmful sites. The ML classifier also strongly flagged this PDF as malicious. The embedded URL leads to a redirector that likely serves further malicious content.

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=class+10+mathematics+textbook+pdf In PDF document text
    • http://files.citrus2030.org/uploads/1/3/1/0/131069764/zajax.pdfIn PDF document text
    • http://files.mrstuckeysclass.com/uploads/1/3/0/7/130776841/4143467.pdfIn PDF document text
    • http://files.alexandriatalley.com/uploads/1/3/2/6/132695301/pejibow-tiwunimikerizen-pugolokebagor.pdfIn PDF document text
    • http://fazigi.theauthenticitycoach.com/uploads/1/3/0/8/130814328/3541394.pdfIn PDF document text
    • http://files.sacredvesselacupuncture.com/uploads/1/3/1/3/131398286/pisojagupipu.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/1/0427/8996/1884/files/gugenupasud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4972/2790/files/46251707920.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5253/8773/files/allen_carr_method.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5638/0574/files/garvin_nuvi_760.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0716/4064/files/wunefifogovafamun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5511/1589/files/ropegaguvelujabijupof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2076/3804/files/lesatajesurijoje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1026/8064/files/72393027774.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3237/8517/files/35847711059.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2683/0744/files/kipabupolalajizuzafutiluw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9377/8837/files/virotugenipafi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007f56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F56 5468 bytes
SHA-256: a62658e32dc7e2b39a59e01b7dfc7cb654c2fe642afe974be50980d8960fc97b
font_01_sfnt_off000091fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91FA 10580 bytes
SHA-256: c4c7b64c041274d86ff84453498765f9a969bbde95dda831baa00afe270e7452
font_02_sfnt_off0000b616.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB616 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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