Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4388ecdd96580c2…

MALICIOUS

PDF

85.5 KB Created: 2020-08-02 11:54:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 381dd6ef107f789f112e9dca46a03a69 SHA-1: b752305db2a2449a29bea20e75f2a03ec945e354 SHA-256: c4388ecdd96580c29dff7768287a7b13b291db26f84a1c2fb14b56105be53df9
194 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a theme song, which is a common lure for advance-fee scams. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' strongly indicates this intent. The redirector URL leads to further obfuscated links, likely to facilitate the scam.

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.ru/pify?keyword=universal+studios+theme+song In PDF document text
    • http://files.ppesafetycompliance.com/uploads/1/3/1/8/131856907/2705011.pdfIn PDF document text
    • http://files.airstreaml2004jl.com/uploads/1/3/0/8/130813796/8849498.pdfIn PDF document text
    • http://files.modularsinc.com/uploads/1/3/0/7/130739480/kapavubibirojudegit.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/1/0433/1631/4277/files/kukavanupuva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4659/8821/files/pitaderodosupirakitone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/4710/5191/files/bash_test_file_exist.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/92313200312.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8592/2466/files/nigiposidiwenusagut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7201/9877/files/soxuxewu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7652/5988/files/6076399108.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rikujolam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5385/0528/files/48412008797.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3686/0839/files/devededatisarexosus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1577/4108/files/34718935995.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4131/5223/files/73137447058.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kenetawibonilolususede.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/6219719719.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f935.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF935 5172 bytes
SHA-256: 355028593dd4b8546f20c5e785c03fe994cd6145d3e94aad007621f0503abc3a
font_01_sfnt_off00010aa2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AA2 15516 bytes
SHA-256: 4270a55c01ac814a0ced133c6a1316e0a4cccf2f78c16fab6f5de2e924879c3a
font_02_sfnt_off00013a4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13A4C 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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