Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a49b4f021d7a4db…

MALICIOUS

PDF

51.1 KB Created: 2020-08-09 03:07:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d58cf686faa36e388c744abb85072fba SHA-1: 69922297843d127fb6ae0415b8556d21a75965ee SHA-256: 3a49b4f021d7a4db099d64904c1b37962563bb4f6339fb28b45220e1d9ac8f5d
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is designed to lure users to malicious content. The document body also contains numerous links to external PDFs hosted on various domains, including Shopify, likely as part of a link farm or SEO poisoning tactic. The ML classifier strongly indicated maliciousness, and the PDF structure suggests a redirection-based attack.

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=abnormal+psychology+12th+edition+dsm+5+update+pdf In PDF document text
    • http://files.philologia178.org/uploads/1/3/2/3/132302759/disunobegotanelubo.pdfIn PDF document text
    • http://jozodukob.fundingaction.com/uploads/1/3/1/6/131606349/vilumejokaf.pdfIn PDF document text
    • http://niwimi.allsoulsharlesden.com/uploads/1/3/2/6/132681556/nojixuje_juzaxumi_wuferi_nibajedejalix.pdfIn PDF document text
    • http://zuluke.blacksheepdivision.org/uploads/1/3/0/7/130776483/dafabobizibivo.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/1/0430/9286/9281/files/rowav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4667/4336/files/57726355247.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kemisavixazesunomezixe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3652/2149/files/xutepisuxajodonavak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2766/8890/files/staight_outta_cashville.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7967/2735/files/nujipe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/danedogorolulefumatexa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9728/3992/files/basic_c_programs_for_practice.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7410/1160/files/vidumeperelupesat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6304/0413/files/arnold_schwarzenegger_modern_bodybuilding_encyclopedia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8558/6841/files/69933119448.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0491/2031/files/wanetowosiwinobejirelo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4826/4089/files/chuyn_file_sang_ppt_b_li_font.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6366/5062/files/zajoporosiloregukinugi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7215/1959/files/sotal.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_off0000772f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x772F 5988 bytes
SHA-256: eb4dbbfbba6284de6f47b7032599f8e06924c2d2b791b639c87ea5c6870f64eb
font_01_sfnt_off00008b65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B65 11164 bytes
SHA-256: 12fbe83e0d204a7b680c9b3c1bb6131dcbb37eb4aeaeeb18f91b2d2baf4a2b86
font_02_sfnt_off0000b0bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB0BB 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3