Malicious PDF — malware analysis report

Static analysis result for SHA-256 835faa2779f182e2…

MALICIOUS

PDF

44.0 KB Created: 2020-08-06 12:12:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 43adba9fb5ee16c5b95ecf3d15c56aff SHA-1: d6e91ceaf5e7709c8a317f80a853be3962f3e895 SHA-256: 835faa2779f182e28e3f24b341596ec7fc41969043950de511cf348066a89b90
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple embedded links, with a critical heuristic firing indicating redirection to known malicious infrastructure. The document body, though heavily obfuscated, contains text and URLs that suggest a lure for free downloads, likely a phishing or scam attempt. The ML classifier strongly supports the malicious nature of this PDF.

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=air+conditioning+system+in+automobile+pdf In PDF document text
    • http://files.shopcafeparis.com/uploads/1/3/1/3/131383319/7952882.pdfIn PDF document text
    • http://files.mobilecitynz.net/uploads/1/3/1/1/131164419/raxuwipule.pdfIn PDF document text
    • http://files.inspiredbytwoworlds.com/uploads/1/3/2/6/132682787/motunalovewi_jesezuzuk_kupitit.pdfIn PDF document text
    • http://jekili.mosaicolearning.com/uploads/1/3/1/3/131383314/tafebovob.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/1/0436/1604/3168/files/88773241089.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8942/0695/files/zuvewenamoresekawaxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2617/6407/files/dissociative_identity_disorder_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8863/4263/files/guruxamaxokiwukilawix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1184/9890/files/1_844_776_6275.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9159/1321/files/forge_energy_to_rf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8035/8811/files/19988646666.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3484/4059/files/54404930425.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2065/6545/files/52766915088.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4764/9429/files/noxejirorubovujow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6073/1803/files/lowes_livingston_tx.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2625/9876/files/guide_to_network_defense_and_countermeasures.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_off000060c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60C2 5588 bytes
SHA-256: 57365bae54696b9b66a731f3b55b02eaa53e204cb930c750aab82186c7396329
font_01_sfnt_off000073a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73A1 9732 bytes
SHA-256: a1d6a32b6efdd4b26d0a26b9ebaab4803b094ffec099e3ec45705b08d98fb870
font_02_sfnt_off0000949b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x949B 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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