Malicious PDF — malware analysis report

Static analysis result for SHA-256 83b5c29f4afae081…

MALICIOUS

PDF

46.0 KB Created: 2020-07-31 18:28:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6311f35a20ca1a3c0fd4bd926f9852aa SHA-1: 7e6b7831fb064dba412492538098bdccd486b9d5 SHA-256: 83b5c29f4afae0813e7743a1ae7e5496a0afe28734ba8ef63ca365706c81d84d
194 Risk Score

Malware Insights

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

This PDF document contains numerous links, many of which point to a redirector service (ttraff.cc) that is known to host malicious content. The document body text, though obfuscated, includes the same redirector URL and links to what appears to be a link farm of other PDFs. The ML classifier strongly flagged this PDF as malicious, indicating a high probability of malicious intent. The primary attack vector appears to be a phishing lure to drive users to malicious infrastructure.

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=get+featured+image+url In PDF document text
    • http://files.woofgangkennels.com/uploads/1/3/1/6/131637896/0621e795e0f4ba9.pdfIn PDF document text
    • http://files.parlourpress.net/uploads/1/3/1/3/131379039/9678.pdfIn PDF document text
    • http://files.cascadiahighspeedrail.com/uploads/1/3/2/6/132682802/7963841.pdfIn PDF document text
    • http://files.goliadathleticboosters.com/uploads/1/3/1/8/131860938/9dfd82f4c01.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/1/0438/2385/7824/files/zimabemixeredifujum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7236/4437/files/tajoborowisopuborijuwize.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/99839510681.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2083/6254/files/79811530328.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4996/5985/files/fulavuvoluko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6454/0827/files/43365350290.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3873/5512/files/mizijaperupid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2677/6227/files/rakuvotojoxazasero.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7027/3174/files/nakogev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8403/6761/files/94262904138.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1727/9400/files/99987266714.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6563/0102/files/94144245825.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4323/2661/files/87893679546.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 4

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_off00006734.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6734 5080 bytes
SHA-256: 5d34569239ce990c70c61484add3be13c065c0017f8f1bf7710273ed3aae9a2a
font_01_sfnt_off0000786b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x786B 16228 bytes
SHA-256: d5e3f00487b17e470ced430904a8d72aa5401675e12e134820724f2f92cc0d5c

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