Malicious PDF — malware analysis report

Static analysis result for SHA-256 60e1994394903176…

MALICIOUS

PDF

49.1 KB Created: 2020-08-25 05:01:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ad1e3db14da4deea8d873a6563a2ad6b SHA-1: a3dc9b7e3a94bd8ca6ec8a8273003487f1dd17a5 SHA-256: 60e1994394903176701e22cb8cad323c38654484358558942c935d7751f809db
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service (ttraff.cc) that is flagged as malicious. The document body, though heavily obfuscated, contains the URL https://ttraff.cc/pify?keyword=affairscloud+pdf+october+2018, suggesting a lure for users to click on a link, likely for phishing or malware distribution. The presence of a link farm and a redirector indicates an attempt to drive traffic to malicious sites.

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=affairscloud+pdf+october+2018 In PDF document text
    • http://files.countryminds.com/uploads/1/3/1/1/131163960/tubekosadafufamitofo.pdfIn PDF document text
    • http://files.grassriver.org/uploads/1/3/1/8/131856827/ripefutavaz.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/1/0454/6487/9256/files/48385130749.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/8841/6669/files/c_foreach_loop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2388/4711/files/yaseen_shareef_roman_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2200/0029/files/32967666591.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6392/6174/files/fortnite_aimbot_xbox_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8161/9861/files/variance_analysis_actual_vs_budget_with_explanation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8637/9163/files/no_witchcraft_for_sale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8374/9783/files/performance_evaluation_report_sample_format.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000080fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80FC 5796 bytes
SHA-256: 99bcaf953977bd807c8b0f56f6ed87bbad57e42663dafcb205394ee124c6d540
font_01_sfnt_off000094be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94BE 10280 bytes
SHA-256: 380e1cf03029d2da3ade6ccdd90f37222d37bc97f13abcbe3858cde89f4760c1