Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a3ac4ac4b83ee29…

MALICIOUS

PDF

56.7 KB Created: 2020-08-03 18:47:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 52e52df476cd0ee82a658ec70ae88e23 SHA-1: d738b0902d811f0466b4157be27ec43102fcdbda SHA-256: 3a3ac4ac4b83ee299e5670483ad43cdf1fc8f4b382a78d13696dabdd97b7dd6d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains numerous embedded links, a technique often used for SEO farms to generate traffic. One prominent link, 'https://ttraff.cc/wb?keyword=2006%20chrysler%20sebring%20sedan%20owners%20manual', points to a known malicious redirector. The document body, though heavily obfuscated, contains text related to a car manual, suggesting a lure. No scripts were extracted from this sample.

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/wb?keyword=2006%20chrysler%20sebring%20sedan%20owners%20manual In PDF document text
    • http://files.chemisme.com/uploads/1/3/0/8/130874143/c15ac6b6710.pdfIn PDF document text
    • http://mizirib.grinnellcecbucketcourses.org/uploads/1/3/1/1/131163590/1500684.pdfIn PDF document text
    • http://files.nauiv.org/uploads/1/3/0/8/130814124/69462e35ac45e.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/1/0430/3070/8385/files/juzavusurefotefu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6339/1894/files/bms_season_1_episode_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7656/4630/files/5434581183.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0727/8238/files/87487349402.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0925/3286/files/pawewatof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1865/7703/files/kixabaroxiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4940/9960/files/bartleby_the_scrivener_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5930/5877/files/zanosapopepifat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9472/8103/files/vugajudelovokoluviva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2353/2195/files/ffxiv_hunt_locations.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1305/3338/files/41175077113.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2341/6995/files/98311992033.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 6

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_off0000942a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x942A 6020 bytes
SHA-256: f0192bb63d7d92923225aef77225565f1684f651b51ccebd3d278ef054e576a8
font_01_sfnt_off0000a88d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA88D 14508 bytes
SHA-256: 25a73acf286f2f8153eca5c73ec55a0fd5346b7c5ff8f834b1d9df428d4130a1

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