Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab783db0377c51f3…

MALICIOUS

PDF

31.8 KB Created: 2020-07-31 21:57:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1206264d4ad2fc49b92b0f8e97765cab SHA-1: a213f8f57b6c77d1f1344827dc50c3d868dbd7f0 SHA-256: ab783db0377c51f358ae6c3a3f6307472bc2b8309f5a99b9149171954ffc5ac4
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text that appears to be a lure for a 'Troy bilt tb22 manual'. This, combined with the numerous external PDF links, suggests a phishing or scam attempt. The ML classifier also strongly indicated maliciousness.

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.com/pify?keyword=troy+bilt+tb22+manual In PDF document text
    • http://files.quietjamaica.com/uploads/1/3/1/4/131453219/kuzofagaxil.pdfIn PDF document text
    • http://files.ir-architecture.com/uploads/1/3/1/4/131452883/zaranuvozulepoxigivi.pdfIn PDF document text
    • http://files.spgoldenbear.com/uploads/1/3/1/4/131436967/321191.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/1/0428/9835/8432/files/71895612735.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/laxefasigapabaxirasu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7783/6702/files/90421837318.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2838/8767/files/81133881635.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2150/8509/files/keturevukugari.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7437/9158/files/raseribafopakipe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1111/3123/files/33582901514.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9888/9635/files/45458647485.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6775/3116/files/wulakaxipepejasuzo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3341/9160/files/70076541801.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9713/7056/files/45407601307.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1021/2518/files/36974542638.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004128.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4128 4976 bytes
SHA-256: 2d5a216dcd9012b0ba677ef20e9a03027608c7ea36594716fa494d76dbe7b21d
font_01_sfnt_off000051fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51FE 9504 bytes
SHA-256: 6ad05545729dfcd65bb17dc369523abc09b9afbb984960ed701b6e4ec8a22525

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