Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c4a71cf8dfca8d9…

MALICIOUS

PDF

44.8 KB Created: 2020-08-14 01:57:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4337816d152bbe580b570c15dbe90ffd SHA-1: 0f903ab530e7a3ede0d40279311a3921ad938013 SHA-256: 2c4a71cf8dfca8d90c469fa94bbbcfc694cb7822891e8c8c1b847c604c5668ac
242 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.cc/pify?keyword=facebook+video+er+pc+exe'. Additionally, it exhibits a high-severity heuristic for a browser extension/update installation lure, suggesting social engineering to trick the user. The document body, though heavily obfuscated, contains the same malicious URL, reinforcing the lure. The presence of a mass external PDF link farm further indicates a malicious workflow designed to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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.cc/pify?keyword=facebook+video+er+pc+exe In PDF document text
    • http://files.goingtruegreen.com/uploads/1/3/0/8/130874431/maderis-kaxapupejopote.pdfIn PDF document text
    • http://files.andwhilewewait.org/uploads/1/3/1/4/131407406/425ced0.pdfIn PDF document text
    • http://files.whatsthepointministries.com/uploads/1/3/0/7/130776085/a3211.pdfIn PDF document text
    • http://tipebar.angipetersonpottery.com/uploads/1/3/0/7/130740596/4152278.pdfIn PDF document text
    • http://ruvefef.wesvaldez.com/uploads/1/3/2/3/132303035/xajosuzumer_fofaxoga_paboja.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/1/0429/9423/7589/files/revoworezafazuku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5759/4011/files/angle_of_repose_definition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6423/7992/files/xafejokulageduninimo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1690/3080/files/sokexogugen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4501/1112/files/40338363983.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8523/3318/files/star_road_rom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6604/1244/files/24703607590.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9186/1410/files/67221197270.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5877/3662/files/38146331871.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1381/5966/files/wevolotawowabo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1962/4870/files/zepozexadugikat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3663/8360/files/sprint_web_texter_plus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3573/7764/files/xexubevulijizetedadebe.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
🗂 Part of campaign: andwhilewewait.org 6 samples

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000724e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x724E 5144 bytes
SHA-256: 66e676b534dbbc16a967f8e0766d6228e13f841153b3ac2bc79ef84b72f67604
font_01_sfnt_off000083dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83DC 9996 bytes
SHA-256: 34017a31e93ebd0978bdf4d2b44fe61ce60fe6da98be8270067116363999e886