Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc56f45c916dc12c…

MALICIOUS

PDF

46.3 KB Created: 2020-08-22 06:41:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1729d1663f7952f82348c7a60dde9fee SHA-1: caaa17a1332718950a3080bdb6f6bda36254e81d SHA-256: bc56f45c916dc12ccdfd5815b5fa4611b8c257e05c3af54052ac569f26ff0991
194 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to a link farm hosted on cdn.shopify.com, and one critical link to a known malicious redirector at ttraff.cc. The document body, though partially garbled, contains text suggesting it is a 'metric conversions worksheet 2 answer key', which is likely a lure to encourage users to click the malicious link. 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.cc/pify?keyword=metric+conversions+worksheet+2+answer+key In PDF document text
    • http://files.votejeffreycoakley.com/uploads/1/3/2/7/132740778/bilelafis-bibukuxo.pdfIn PDF document text
    • http://dowib.theelectricgateco.co.uk/uploads/1/3/1/3/131379213/4171463.pdfIn PDF document text
    • http://files.dbmotorparts.com/uploads/1/3/1/3/131381799/sesejifuve.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/1/0437/0972/6888/files/81656570318.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/98629167596.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0083/9842/files/43765322237.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/0718/4793/files/bourdon_tube_gauge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1703/4134/files/18667578662.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4925/5066/files/8th_grade_common_core_math_standards.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9408/1687/files/meridian_555_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7738/5892/files/19754181757.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5621/7750/files/benixetapewa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6285/2761/files/ninja_blender_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/98774508290.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9245/7112/files/apple_s_mission_statement.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007093.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7093 5312 bytes
SHA-256: 1c1a155c7144f7b42ff61071abb872255919b2a43257235040c6d3344782f420
font_01_sfnt_off000082c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82C4 13016 bytes
SHA-256: 66ad654e48f0ca6a6e1a3bfce773101b6603242823da476befc7e6fb96a2fc24

Open this report in the interactive analyzer, or submit your own file for analysis.