Malicious PDF — malware analysis report

Static analysis result for SHA-256 a39d8916402e0886…

MALICIOUS

PDF

48.1 KB Created: 2020-08-24 23:22:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fea2f7384e5c6463c73221b86bb06127 SHA-1: b043258131c5ec5ed8523eadc9645a1640597ed2 SHA-256: a39d8916402e0886e82499d58d86031a6e567db7862ad6d6a28e6a0994bab88a
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many pointing to Shopify domains. The document body, though heavily obfuscated, contains the same redirector URL. This suggests the primary goal is to redirect the user to 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.com/pify?keyword=chicharrones+bokados+informacion+nutricional In PDF document text
    • http://files.justkiddingtheatrecompanyinc.org/uploads/1/3/1/4/131407148/7030b495b5c.pdfIn PDF document text
    • http://files.theback40museum.com/uploads/1/3/1/3/131398378/xakulug_riruzokox_towibo.pdfIn PDF document text
    • http://ziril.alcovitusa.com/uploads/1/3/0/7/130775677/09ef5c.pdfIn PDF document text
    • http://files.igottheshotphotography.com/uploads/1/3/0/7/130775102/kamepabizus.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/1/0433/9433/4870/files/minotoma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7323/1258/files/motugufologe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3321/5654/files/minimalist_blog_templates_blogspot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0731/9974/files/dometugobanutilovetozura.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4164/3928/files/parugiloma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/8506/2304/files/model_business_letters_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9839/1196/files/83181227194.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2078/7613/files/cutting_edge_book_upper_intermediate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7221/6483/files/75796856520.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0513/1421/files/da_form_5118.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6940/6360/files/wind_erosion_control_measures.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0622/9654/files/74017428383.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6772/8279/files/53365528071.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4726/4166/files/98992559561.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000061d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61D4 5372 bytes
SHA-256: b31ebe60652b5f58782f0b0b6bdacb11aed3162bf37e1e03b1341b2625d48c39
font_01_sfnt_off000073d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73D9 5580 bytes
SHA-256: 3871cde53d27cd45c6da898cd30d9b45fce5eab8d289a1a4cc182bd7cf76f45b
font_02_sfnt_off00008317.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8317 15352 bytes
SHA-256: a59f17db7597c26210108894b4cd6c45af784933bb6f95217e8f72177edfc2f1