Malicious PDF — malware analysis report

Static analysis result for SHA-256 58d1421ff8db56dd…

MALICIOUS

PDF

36.3 KB Created: 2020-08-07 04:52:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 785a298ae4c59cd3047a897555cbcff0 SHA-1: 62d3b958abd87587520958cb2868a96239f0c069 SHA-256: 58d1421ff8db56dd7ed611214cb8b0aa61d85e118497fc5e816d9cc221259af4
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains a URL that appears to be the same as the one identified by the heuristic. This suggests the document's primary purpose is to redirect users to malicious infrastructure, likely for further exploitation or credential harvesting. No scripts were extracted from this sample.

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=anacalypsis+vol+2+pdf In PDF document text
    • http://files.woodfieldmscurtis.com/uploads/1/3/0/8/130873992/lilikikifesupu.pdfIn PDF document text
    • http://files.pcarep.com/uploads/1/3/1/3/131380175/kalubupiwetap.pdfIn PDF document text
    • http://files.arizonafiberartsretreat.com/uploads/1/3/1/4/131409442/roxetebo.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/1/0431/0722/1670/files/46970244080.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8757/6740/files/46904119941.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7927/0561/files/chemistry_form_4_chapter_1_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0402/5242/files/66359480708.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2229/3920/files/puzewi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7229/8918/files/tufinefibawufido.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2017/2960/files/76940276002.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7478/1338/files/63121714738.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5850/3590/files/2016_golf_drivers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8456/3110/files/48766081901.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 7

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_off00005106.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5106 5336 bytes
SHA-256: 136aa0fa53df8b0938be0f84c3cdea7a72ec0e2314dd750651f9b109588e9133
font_01_sfnt_off00006359.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6359 9836 bytes
SHA-256: 5944fda7ef1e1309143262fc91d6a48d0a2caf5c2d45e3fe90fbd0fad6b870de

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