Malicious PDF — malware analysis report

Static analysis result for SHA-256 79d287cd4ce6ba63…

MALICIOUS

PDF

44.6 KB Created: 2020-08-02 19:59:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7c6cd1a2aca40b0a9db48dd54ccf501d SHA-1: 69b28f59a6805c162285c8044255a42e4b39ff21 SHA-256: 79d287cd4ce6ba63ca6ce2ea8c44bf15fc6be135d87b554aa999069e2ec10930
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links and a document body that point to a redirector URL, identified as malicious. The heuristic firings indicate this PDF is part of a link farm designed to lead users to malicious infrastructure, likely for phishing or scam purposes. No scripts were extracted, but the presence of embedded URLs and the ML classification strongly suggest malicious intent.

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=ww+monk+guide In PDF document text
    • http://files.crafterafterhours.com/uploads/1/3/1/1/131164002/kadirorepaji.pdfIn PDF document text
    • http://files.peretzadventures.com/uploads/1/3/1/4/131438392/6235137.pdfIn PDF document text
    • http://files.kaiderlaw.com/uploads/1/3/0/8/130873708/doralatope_wobos.pdfIn PDF document text
    • http://files.fivetimesfamous.com/uploads/1/3/0/8/130813931/1bd6881d80.pdfIn PDF document text
    • http://files.asnapoftime.com/uploads/1/3/2/7/132712127/7034763.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/1/0433/0687/7080/files/83390791822.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9122/1923/files/48165939015.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6056/0021/files/fubanipekevegigujudowek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9480/1568/files/mupiraboginifuvowosaxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6515/6508/files/62053814146.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8463/5544/files/powomaliguge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3467/3305/files/88472004797.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6511/4775/files/nagoda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9784/8996/files/xopegikirezolog.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007222.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7222 4796 bytes
SHA-256: 2f541fc37194a40ca9a2d580e323fed97ac94138d83d9c8bf6f4484039ebf8dd
font_01_sfnt_off00008285.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8285 10340 bytes
SHA-256: fb5cc88900f4f70cefe8e409d0b59762e40708892db0153c82f8e6f5ab481843

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