Malicious PDF — malware analysis report

Static analysis result for SHA-256 619acf08b4e1e7e0…

MALICIOUS

PDF

42.3 KB Created: 2020-07-27 18:01:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 77a683fb142990f14abb79c212f625cc SHA-1: a488e9a7f19d393f09ddadc66e63709a49c3bba4 SHA-256: 619acf08b4e1e7e0c2be40125bacf5cc08c4fa43601671a041ca88bb8abdcb6d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, with the primary link pointing to a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document body appears to be obfuscated or corrupted, but the presence of a link farm and a malicious redirector suggests an attempt to lead users to harmful content, possibly for phishing or malware distribution.

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=gamesir+g4s+guide In PDF document text
    • http://files.taryngillen.com/uploads/1/3/0/8/130814529/b3eb8.pdfIn PDF document text
    • http://files.davesthoughts.com/uploads/1/3/1/3/131384589/kefurelozag_sijiketovesapo_ranumofarunon_zofoviliraza.pdfIn PDF document text
    • http://files.honeybunchbeeswax.com/uploads/1/3/1/3/131381003/479570fb5c486.pdfIn PDF document text
    • http://files.byrdsworld.com/uploads/1/3/1/3/131382078/gibigom.pdfIn PDF document text
    • http://files.madlyeclectic.com/uploads/1/3/1/4/131483253/nuwitoduku_xafozovininu_lekilirox_navagad.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/1/0433/0687/7080/files/vekedexixerokasadoboma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6820/3942/files/noxon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9941/3925/files/84766987608.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7047/9768/files/17472262568.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7795/0881/files/25120518569.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0712/3357/files/17125028360.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3123/1644/files/45997412948.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3189/4944/files/jolunalod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1102/2756/files/65339192681.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6636/8935/files/woramopuxiroba.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_off0000597b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x597B 4556 bytes
SHA-256: e805823d491d491c3100e7fa3d811d8f1d4e294ecef658a034634057e7096251
font_01_sfnt_off00006984.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6984 4816 bytes
SHA-256: 9ebfa02d78785fd19b0264dde17de836f1e11b8de9d9e86db3a64adb33e4af24
font_02_sfnt_off000079e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79E0 9904 bytes
SHA-256: c3eee0a7dbea57430c274ac6e6300d4da5cac9fbcf3c131e3f15994a2c78ec74

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