Malicious PDF — malware analysis report

Static analysis result for SHA-256 9053d40d3d1ed314…

MALICIOUS

PDF

51.0 KB Created: 2020-07-27 05:03:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d92db3c4690512a646f50889b0642911 SHA-1: 41ede010276d12fc2b9001b7ea38dbb44d4282be SHA-256: 9053d40d3d1ed314e4a0be839f4eb50c77e68124ac8b8968c1e2c388db42dd82
194 Risk Score

Malware Insights

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

The PDF contains a lure related to an IT internship certificate, which is a common social engineering tactic. It embeds a large number of external links, with one critical heuristic firing indicating a malicious redirector infrastructure. The ML classifier also strongly flagged this PDF as malicious. The primary attack pattern involves redirecting users to potentially harmful content via these embedded links.

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=exemplaire+attestation+de+stage+en+informatique In PDF document text
    • http://files.greenmountaintreats.com/uploads/1/3/2/7/132740682/zevojasegilopimota.pdfIn PDF document text
    • http://files.silveroceangroup.com/uploads/1/3/1/3/131383733/pugezezumix_lasuxebepo.pdfIn PDF document text
    • http://files.atomlive.org/uploads/1/3/0/7/130740033/3623576bc2.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/1/0429/3869/5846/files/13272431640.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5989/4689/files/35165070599.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8054/8503/files/bodukeruriruxanalegepi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vewurobafug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/55542454294.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9846/4661/files/xajodadelixusexoruzuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9862/8501/files/nidujufopejuzexoja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/musigusuwekun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4732/7646/files/mabutejoriwopat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3550/8381/files/wojuxoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7954/1671/files/rugujoredipe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7665/7055/files/72831766108.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8878/2236/files/89865810625.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 6

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_off000083df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83DF 5396 bytes
SHA-256: 097f4d7951a8bd864a3abe56bceeecc8d907831408aaf31834dedcf69ccb747c
font_01_sfnt_off00009618.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9618 11988 bytes
SHA-256: c04c619c95bfe834bc0f17a68263be2b6d370a5cebd0c91ed0a36ec8f1f8a86a

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