Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4f944d30d572dd4…

MALICIOUS

PDF

42.7 KB Created: 2020-08-20 23:53:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3dbbb744ed69662cf1c442bb486d8f31 SHA-1: f727d030906edad5d216f7b4dcb28c1c6a6832cc SHA-256: e4f944d30d572dd412f0279dab8402c4c8f0b3731a8beaaec37bc55cbd49231f
202 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, pointing to 'https://ttraff.ru/pify?keyword=incentive+policy+format'. This URL is embedded within the document body, suggesting a lure to trick the user into clicking it. The document also contains a large number of embedded links, many of which point to Shopify domains, but one critical heuristic indicates these are part of a link farm. The presence of a 'download button' heuristic further supports the idea that the document is designed to trick the user into downloading or navigating to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=incentive+policy+format In PDF document text
    • http://rebikasez.baieslings.com/uploads/1/3/2/3/132302842/a6a58cc.pdfIn PDF document text
    • http://files.transactionbankingacademy.com/uploads/1/3/1/6/131607075/9288390.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/1/0437/4138/0769/files/loomis_sayles_bond_retail_fund_fact_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/0145/0396/files/carrier_water_cooled_chiller_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5664/4774/files/gewozalopadugobuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0566/5703/files/96549576529.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/6225/8851/files/94762946291.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9590/8761/files/luwefixesesaxitisija.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8489/0790/files/careless_whisper_saxophone_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9664/6556/files/alert_dialog_button_color_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2358/7733/files/wenuvuxuxavuxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7847/5162/files/dr._collins_pcat_self-_study_guide_download.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_off00006084.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6084 5080 bytes
SHA-256: 30ff3c5825d68fbb13d20492a7a6a3df18cefc5ea37a745f2fec02eccdf41c95
font_01_sfnt_off000071ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71BA 14052 bytes
SHA-256: 959565fd5e54f7f3ef214f554ff49bf6d0977a7d13bd17c2ced75dca43a06016

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