Malicious PDF — malware analysis report

Static analysis result for SHA-256 480e80f90de3dfa3…

MALICIOUS

PDF

49.2 KB Created: 2020-08-07 11:34:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3c80b05e4483dc966766d278d0f2fa69 SHA-1: 3ae7b4d0f807042a1f3bccc20f82eaa6b79e0081 SHA-256: 480e80f90de3dfa3d77480a5569c84a20b43f75c30141430d0d18e755ce2621b
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a common tactic for SEO spam and malicious redirection. One prominent link, 'https://ttraff.cc/wb?keyword=astm%20a36%20standard%20pdf%20free%20download', points to a known malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to lure users into downloading further malicious content under the guise of providing a technical standard document. The presence of a link farm and a redirector indicates a delivery mechanism for potentially harmful payloads.

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=astm%20a36%20standard%20pdf%20free%20download In PDF document text
    • http://benukaje.dworkzgarage.com/uploads/1/3/1/6/131607062/vovopu.pdfIn PDF document text
    • http://files.ayrarcheryclub.org/uploads/1/3/1/4/131438459/dukelijirogit_tafedepez.pdfIn PDF document text
    • http://files.apeacefulbirthdoula.com/uploads/1/3/0/9/130969440/5828cbf8.pdfIn PDF document text
    • http://files.popovamayya.com/uploads/1/3/0/7/130739214/folak_mujovoxutuxazu_siribe.pdfIn PDF document text
    • http://files.ultimatelymeaningful.com/uploads/1/3/0/9/130969768/88d588834aba.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4119/3127/files/quality_data_analysis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/33540287451.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1583/0695/files/powerix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0881/0398/files/4617805844.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1819/6891/files/73127234899.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3182/9412/files/vodamomasada.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8118/8003/files/38382141793.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9014/0581/files/dazij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9161/6153/files/42273358194.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9522/8565/files/nokopaliduziragezode.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 7

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_off00007273.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7273 5328 bytes
SHA-256: 738ac7c74a4dbff00774350a0d1dc62d2aa0c772d8b769fe41dc08ba4d02cf48
font_01_sfnt_off0000846e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x846E 10856 bytes
SHA-256: 5c5191955898b67cd48c5f316215329bede11879d2803bc9a00d94d9dadaa01b
font_02_sfnt_off0000a949.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA949 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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