Malicious PDF — malware analysis report

Static analysis result for SHA-256 939303416ef8aee6…

MALICIOUS

PDF

49.6 KB Created: 2020-08-26 23:57:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 51c85fad2027b817d3c0280ee424de8f SHA-1: 885f8f40ac1bd50fb473cf894e10c5ade4231c5d SHA-256: 939303416ef8aee6b6d7eee6f36d253128ae40d78375c2625e4d654c59616eed
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.cc/pify?keyword=la+place+de+l%2527adjectif+exercices+pdf', is designed to redirect users to malicious content. The document also contains a large number of embedded links, many of which point to Shopify domains, suggesting a link farm or SEO manipulation tactic to obscure the malicious redirector. The presence of multiple unknown URLs further supports the malicious nature of the document.

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=la+place+de+l%2527adjectif+exercices+pdf In PDF document text
    • http://tebiton.fbcbelfast.com/uploads/1/3/1/6/131606457/zajenuzif_duvawalixe.pdfIn PDF document text
    • http://xakuge.whitestonegoldens.com/uploads/1/3/2/6/132681268/50bb1c2e.pdfIn PDF document text
    • http://fonogodek.coronetclub.org/uploads/1/3/0/8/130874049/7e7bb4efb1.pdfIn PDF document text
    • http://files.johnsonwriter.com/uploads/1/3/1/8/131871705/wowig-rabusisajela-dutejisuzanuxe.pdfIn PDF document text
    • http://kezoma.cpmbl.com/uploads/1/3/1/8/131856022/b31d91a2a662.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/1/0429/5488/3231/files/83432355313.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0487/0305/files/brown_1981_rock_characterization_testing_and_monitoring.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5684/0350/files/camidoh_yawa_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1574/0314/files/75431600428.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7680/5018/files/reporte_garita_san_ysidro_tijuana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3452/5347/files/technical_drawing_frederick_e_giesecke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2553/8980/files/79243450702.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8933/7256/files/determiners_worksheet_for_class_9.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6329/6678/files/3130831820.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2068/9306/files/vaxonalulojureme.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4547/6757/files/accumulated_depreciation_balance_sheet_presentation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9324/5600/files/antibiotics_simplified_free.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_off00007f9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F9C 5268 bytes
SHA-256: adbcf4d700a46df4a5b0176b33b00627ae462870a9ce718f73812cfab21e573c
font_01_sfnt_off000091a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91A7 12216 bytes
SHA-256: 1bcf92a98300f548c335c2f37f47f2b84a725269ab81d5124170c361e24b705c