Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b3cc99f13e44672…

MALICIOUS

PDF

47.6 KB Created: 2020-08-13 03:53:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f613a33dea1677abaf7b25bc494ecaf6 SHA-1: ef2d709a8565ca4450ac40b5133a8a0918ca82d0 SHA-256: 2b3cc99f13e44672d460958ce46402a3e0149b8e99ad9d7a9be799e20dacb281
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector found by heuristics. This suggests the document is designed to redirect users to malicious sites under the guise of providing a 'Telugu formal letter writing format pdf'. No scripts were extracted, limiting the analysis of further execution chains.

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=telugu+formal+letter+writing+format+pdf In PDF document text
    • http://vujar.radgarage.ca/uploads/1/3/2/8/132814930/zuwarolof.pdfIn PDF document text
    • http://files.poundridgegardenclub.com/uploads/1/3/1/4/131454114/3479029.pdfIn PDF document text
    • http://files.packwoodstation.com/uploads/1/3/1/1/131164399/davag.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/1/0431/1708/4839/files/45674819989.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4479/8613/files/45134010415.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8512/8095/files/72175072188.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4021/9037/files/76228668313.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5850/3573/files/lazuxijutazudoxefapoxus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/mikuwozivanegegexalu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5485/7377/files/4192185628.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8323/5489/files/telejiwumeje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2806/2109/files/duwemot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1274/3591/files/8247976226.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nudukesobiji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3911/3895/files/jiwapejo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9665/2443/files/5801279600.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_off00007c08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C08 5224 bytes
SHA-256: bca2cc95d1ab28145c40d6399870a1423a27aac3fc70c44e20dcc619438123ed
font_01_sfnt_off00008dc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DC4 10344 bytes
SHA-256: fd6c6075cb82c25b2186f5a7c81943565c741d671080f269391c0dda1eece6a1

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