Malicious PDF — malware analysis report

Static analysis result for SHA-256 de610d1ea9baf508…

MALICIOUS

PDF

45.4 KB Created: 2020-08-17 12:59:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: df24c28792edfbde75509fd9c2d69d42 SHA-1: dd1f4b6f3e062f4ebdbf1286c42986eead0d3d70 SHA-256: de610d1ea9baf508752d8cfb01f8dd7bc4af4d8fbb88c9afe97a9a28eadee7ef
194 Risk Score

Malware Insights

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

The PDF contains embedded links, with one specifically pointing to a known malicious redirector infrastructure (ttraff.com). The document body text, though partially corrupted, includes the same URL and a seemingly unrelated string, suggesting a lure. The PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM heuristics confirm the presence of malicious and link-farming URLs, respectively. The ML classifier also strongly indicated maliciousness.

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.com/pify?keyword=onga+ponga+chonga+video+song In PDF document text
    • http://files.therosebineclinic.co.uk/uploads/1/3/1/1/131164424/borikojovoxuwom.pdfIn PDF document text
    • http://files.agourahighschoolib.com/uploads/1/3/1/4/131438641/b237e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5397/3657/files/amazon_gift_card_carding_method.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1543/0553/files/88910740899.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0669/7367/files/38121790678.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1017/0786/files/military_leave_approval_letter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/5568/0410/files/sap_bahaya_merokok_pada_remaja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5000/0796/files/lofidivane.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1618/3205/files/kamulup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3564/0487/files/turixidatunimisu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0755/8310/files/63643627259.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1790/3003/files/gajuduku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0453/4956/8667/files/ccim_bams_2nd_year_syllabus.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 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005a51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A51 5296 bytes
SHA-256: e5626a5225e7ac359d01385d87f997f85dc19a412b927227329aa03ef623beed
font_01_sfnt_off00006c53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C53 14988 bytes
SHA-256: 4cca8d51d5d0800ee89e88c688cb370e9756e4f934102fed9116930d2f510420
font_02_sfnt_off00009ad6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9AD6 2936 bytes
SHA-256: 57eb3e84201ad64a6a3b0471a3f8a41ad1936b13e242cbb32d08f3ba0730e4b3

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