Malicious PDF — malware analysis report

Static analysis result for SHA-256 c03ac9b7937b18d2…

MALICIOUS

PDF

67.2 KB Created: 2020-08-08 03:52:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 53f8d42d8b3d5f5bf3bc8025817f653c SHA-1: 086080cc7b9a7425c98edbb0c77f099c05f2ac29 SHA-256: c03ac9b7937b18d2743f0f4c75afc038233b7b06758dfd6958d90e88fecbad3f
194 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the redirector link. This suggests the primary goal is to lure the user to a malicious site, likely for further exploitation or credential harvesting.

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=fatty+acid+derivatives+pdf In PDF document text
    • http://zudevi.greensidepublishing.com/uploads/1/3/0/8/130874207/bilonuleje_nisefepavujo_vobopanotepud_pujawusasujoj.pdfIn PDF document text
    • http://files.applied-magnetics-shop.com/uploads/1/3/2/8/132815220/be05f.pdfIn PDF document text
    • http://files.woonsocketautismbenefit.org/uploads/1/3/1/4/131456012/toxavez-pipan-vubimawilomus-nemenexotobebe.pdfIn PDF document text
    • http://wapip.fargomontessori.com/uploads/1/3/2/6/132681504/1129659.pdfIn PDF document text
    • http://files.marquisjewelers.com/uploads/1/3/1/3/131383297/3259659.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8317/7885/files/furuvujonapelujuziwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5376/8095/files/the_art_book_big_ideas_simply_explained.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6803/0102/files/que_es_el_acoso_escolar_o_bullying.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1631/4277/files/gaguvozederukimorunagos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4778/8450/files/vafipuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6063/3504/files/92703596194.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9667/0365/files/gawawaworukelasiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4389/5966/files/gabexajisutapog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2029/5064/files/jajukekebasozadelug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6108/3288/files/nijawimexilugikafepo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5889/6802/files/23280193169.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b887.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB887 4804 bytes
SHA-256: 9fd593821c5d7522c939dbd6c64d13c3466d5d05a2a2a897685d23c85311237e
font_01_sfnt_off0000c8ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8FF 12608 bytes
SHA-256: 3ae3d9c4fdd89dda3f99aa88a90b4efdb427baf0e993e3ef3a71fcf931ffcbd4
font_02_sfnt_off0000f1c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1C2 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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