Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cd690198bc1a301…

MALICIOUS

PDF

43.8 KB Created: 2020-08-18 15:48:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 78176b2ab1888706576c244b0f84b126 SHA-1: 60eb69698a9cbf06403e355de054adaa0b42df52 SHA-256: 4cd690198bc1a3018633a4f75ada7f33c14242d2e0a9bc93907cc5100e10176e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it points to malicious infrastructure. The document body, though heavily obfuscated, contains a URL that appears to be a lure for downloading Chromium OS. This URL redirects to 'ttraff.cc', a known malicious redirector. The PDF also contains a large number of external links, as indicated by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or spamming technique.

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=chromium+os+x86+iso In PDF document text
    • http://files.morganmonroe.net/uploads/1/3/1/6/131606965/givirejelefe-jatepirugatal.pdfIn PDF document text
    • http://wevojij.globalrelocationsolutionsinc.com/uploads/1/3/2/8/132814930/ruwipidona.pdfIn PDF document text
    • http://files.theavancehotel.com/uploads/1/3/0/7/130738848/65ce9e493f.pdfIn PDF document text
    • http://zabomuv.schgocbkp.org/uploads/1/3/1/3/131379373/f8373b4c78b838.pdfIn PDF document text
    • http://files.rabbitmountainlavender.com/uploads/1/3/0/7/130738625/futevukumuj_lulamatix_libujuferebetux.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/1/0431/0794/2549/files/puropu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84574839703.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6229/6725/files/ketofipivob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6583/4649/files/clubbers_guide_ibiza_2008.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3623/5160/files/desupo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5461/2123/files/81868714159.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0485/3402/files/simedapubomodo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8230/7989/files/action_words_worksheets_for_kindergarten.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7525/3910/files/1152302114.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/5676577217.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/1726/7368/files/a-_x-_l_full_movie_sub_indo.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_off00006ebf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EBF 5004 bytes
SHA-256: ebf36fd0d2f0e6cd60a2be4305b0ac818a64ddf7847c2a91870cf55c30fbf7cb
font_01_sfnt_off00007fa6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FA6 10084 bytes
SHA-256: c11cd9c5eaa635b3d7658cc28cf7b026ba76f445d4d9add0e2d85f7d2b84b399

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