Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2aff2237d4b7236…

MALICIOUS

PDF

35.2 KB Created: 2020-08-06 06:55:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 14a4bdf00fbd0e24a3420fd1bdeda6d1 SHA-1: e4f77ec5a45ae89d5c7c6bf6ea11ce100a7311b3 SHA-256: a2aff2237d4b7236652f75b07d41a0db9223b4e9f226d9ffaac1ae4e0e5a0477
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link redirects to a known malicious domain (ttraff.cc). This suggests a link farm or redirection tactic to obscure the final malicious destination. The ML classifier strongly flagged this PDF as malicious. The primary attack pattern involves luring the user to click on the malicious redirector URL.

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=hillsong+united+oceans+chords+pdf In PDF document text
    • http://files.gptraveller.co.uk/uploads/1/3/2/7/132712139/gujobamat_nipapivu_gomabas.pdfIn PDF document text
    • http://files.madebyloulou.net/uploads/1/3/1/8/131871891/59bfb6ba928ffb6.pdfIn PDF document text
    • http://kozilot.bjscholarship.org/uploads/1/3/0/8/130874524/birader.pdfIn PDF document text
    • http://files.mvkofcclubinc.org/uploads/1/3/1/3/131398075/jidilugetu.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/1/0435/8828/8675/files/aurelio_casillas_sptima_temporada_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4112/8601/files/how_to_enchant_items_with_commands.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5757/8137/files/kotefanatuwaferivatobidus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/44368867506.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tutokufumetuja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/29529942485.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4292/8790/files/jereposu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4652/6376/files/refajutataxopogodiwuxusel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4521/5656/files/67725755017.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4459/2021/files/causas_y_consecuencias_del_alcoholismo_en_los_jovenes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2457/9736/files/37077177171.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004c97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C97 5380 bytes
SHA-256: 2735ba31e18586d269482f5a8fade0c1fbb202e6fac353053c894a0611798959
font_01_sfnt_off00005ed6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5ED6 9712 bytes
SHA-256: ddb5f7e86b8b0ff4c8e60fc4a090242a1c3ad169fa9b2e59384b8ee418d88270

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