Malicious PDF — malware analysis report

Static analysis result for SHA-256 978f5304784b9b84…

MALICIOUS

PDF

45.6 KB Created: 2020-08-16 21:09:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 851fa0fbe8773822b9a766d5b6e6f310 SHA-1: 3f1db9e892da540414dd24155f6670a625a803e4 SHA-256: 978f5304784b9b8429451da68743e5d2917e9688c2304f9327d14074e57cdc66
194 Risk Score

Malware Insights

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

The PDF document contains a mass of external links, many of which point to a redirector service known to host malicious content. The document body, though heavily obfuscated, contains a URL that appears to be the primary lure. The presence of numerous links suggests a link farm or SEO poisoning tactic to distribute 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=video+editing+apps+for+android+without+watermark In PDF document text
    • http://files.exportstoriespodcast.com/uploads/1/3/2/6/132682787/5820397.pdfIn PDF document text
    • http://vevopode.donchurropilsen.com/uploads/1/3/0/9/130969723/xovugaxefepilat-jipaz.pdfIn PDF document text
    • http://files.oxfordponyclub.com/uploads/1/3/0/8/130813701/7389492.pdfIn PDF document text
    • http://files.peterchaophotography.com/uploads/1/3/1/8/131871462/da3ed60491135b8.pdfIn PDF document text
    • http://files.jonkammerman.com/uploads/1/3/1/1/131163684/3288280cd5d.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/1/0435/4703/3752/files/zufetotinakikixe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1816/5144/files/elogio_del_silencio_anselm_grun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7835/9967/files/glencoe_french_1_bienvenue.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1617/4243/files/49546441807.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3724/5086/files/wavawat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0052/9049/files/83601264766.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8375/9765/files/victim_of_changes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2603/9463/files/44013875685.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7346/1669/files/definition_of_stressors.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8306/2695/files/lithium_sulfur_battery_ppt.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6627/8556/files/sabonokifusewagusa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0155/1771/files/33538279879.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 7

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_off00007248.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7248 5544 bytes
SHA-256: 55caee81bf239ce41a0c5e15501543772ae574247d651353dce06654b90e3fb9
font_01_sfnt_off0000850d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x850D 10420 bytes
SHA-256: 44b8103dd25eae5f934f83e5579119fab42fd110967987370d8d0457de1b7418

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