Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2a835b37184c9f0…

MALICIOUS

PDF

41.1 KB Created: 2020-08-03 17:39:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3040b97ef774ac601d7343e3aa6d8dfa SHA-1: 26e2d6080267d931fb469058b921167345febba0 SHA-256: c2a835b37184c9f02bb918cb7338d75c23f797cd94808c053e0a5b9aa0907617
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains text suggesting it is related to educational notes, likely a lure. The primary malicious activity observed is the redirection to a malicious URL, which is a common tactic for delivering further payloads or conducting phishing campaigns.

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=benim+hocam+kpss+ders+notlar%25C4%25B1+pdf In PDF document text
    • http://files.versaillesassembly.com/uploads/1/3/2/3/132302924/kudasalageja.pdfIn PDF document text
    • http://files.petalumamarinabusinesscenter.com/uploads/1/3/1/4/131452811/7011564.pdfIn PDF document text
    • http://files.chrisczubatyphotography.com/uploads/1/3/0/8/130813325/xafuta-lakirudufaru-xukemiva.pdfIn PDF document text
    • http://files.plussizeweddingdressma.com/uploads/1/3/1/1/131164424/f4e242825.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/1/0433/7978/5886/files/65899263662.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0642/6275/files/xurimifomoputom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5253/1869/files/petumevivisuga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0854/0324/files/terixagatoleveb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5525/9560/files/mimifef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ziduvawijixivobufanevi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/40814320730.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9199/2484/files/kozefatukaxazalefijalalaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3506/5505/files/nuzasavujomamusuderamag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9636/7511/files/lopujanivipogurelujegi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2693/8018/files/68143304277.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7316/6744/files/tijereluje.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 1

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_off00005e69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E69 5540 bytes
SHA-256: de0ae64461d8dca2b01f4b1f697a765d841bd24cc8312df239bcecbe5c2ba25a
font_01_sfnt_off00007115.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7115 11648 bytes
SHA-256: 67f3d2cc0d5230c3a9a7e99e09150902b57949d27b04db8a3f3105cbdb3b4086

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