Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f486ce6c2480740…

MALICIOUS

PDF

58.1 KB Created: 2020-08-10 02:43:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 78f586007ac0e8375c69f261a0aee08c SHA-1: 2107f1e89f0dba19a9883d39d0283f0b29e25a3b SHA-256: 7f486ce6c24807403d6f3c221f994dfc56fb4d4bf6477677131c46af01172daa
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, many of which point to redirector infrastructure designed to obscure the final malicious destination. The primary redirector URL, 'https://ttraff.ru/pify?keyword=classroom+action+research+proposal+pdf', is flagged as malicious. This suggests the document is part of a phishing campaign, likely using a "free download" or "research proposal" lure to trick users into clicking the malicious link, which then leads to further compromise.

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.ru/pify?keyword=classroom+action+research+proposal+pdf In PDF document text
    • http://files.drallisonreidchiropractor.com/uploads/1/3/2/7/132740685/lawur_rudimamofaxis_zibemi_tupijurifives.pdfIn PDF document text
    • http://bezotaba.doitallpressionals.com/uploads/1/3/0/7/130776485/55a095.pdfIn PDF document text
    • http://files.allamericanhousesitters.com/uploads/1/3/1/8/131871786/6762086.pdfIn PDF document text
    • http://fefozut.lldmshakopee.org/uploads/1/3/0/8/130814788/kerekonebob.pdfIn PDF document text
    • http://files.tuslawmustangsfootball.com/uploads/1/3/1/8/131871992/638843e.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/1/0434/7727/0692/files/muvovunop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5131/0486/files/gujetogi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6241/9863/files/70108318888.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/radeziwiwilajumigetadad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3560/5664/files/kevizukubuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4803/2666/files/decimal_addition_and_subtraction_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6799/7344/files/kevelu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5679/0695/files/42326171466.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2442/4853/files/41800176464.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/3348/1636/files/bf_design.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3103/6053/files/4213168216.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3332/9817/files/albumin_transfusion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0632/8995/files/96989439388.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5869/1232/files/cartooning_philosophy_and_practice.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3564/8409/files/1869286874.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_off0000a624.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA624 5300 bytes
SHA-256: d0a4e0ed1792e422321fc461170edd0371144b697161c078dfe018b2c9d24235
font_01_sfnt_off0000b7fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB7FC 10252 bytes
SHA-256: d29b65e49e9dc86d9e24c640560609dde82e3de66bb5c9895c27881fe9ea24dc