Malicious PDF — malware analysis report

Static analysis result for SHA-256 dec0790b2409e61f…

MALICIOUS

PDF

43.8 KB Created: 2020-08-20 21:08:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3f8d7714590f3ccaecc2f05052826241 SHA-1: af8d3da5cc2382d501f1e5862e10706bfddd5213 SHA-256: dec0790b2409e61fe136aecaf73f9be22e9dafe13ab14c972535d31973e8a9f2
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, also contains a URL pointing to a redirector. This suggests the primary purpose is to lure users to malicious sites. No scripts were extracted, limiting further analysis of specific payloads.

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=zakhmi+dil+chupa+ke+royenge+video In PDF document text
    • http://files.rustypistolsreloaded.com/uploads/1/3/1/3/131398250/wabuvovagizal_fojovewudekov_newojuzujidogan.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1230/7618/files/59642883571.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3886/6593/files/tapugisa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7155/3189/files/36566704499.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2398/3015/files/lufokuji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8219/5879/files/25890255543.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4940/2024/files/business_management_grant_opportunity_guidelines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1799/3366/files/64440792623.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5499/7402/files/63704561159.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5969/9109/files/vovibemijenudep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3058/4213/files/towuxut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7870/4536/files/netflix_dvd_queue.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 2

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_off00004fe2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FE2 5492 bytes
SHA-256: 529819aa59163e97a9589484dfacf6768ab42bc7cacd2d5531319630a94a3559
font_01_sfnt_off00006277.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6277 14740 bytes
SHA-256: 70339a32c3b72085015f3c72ca119860d14f50d817deb2ccf15b54e17150f98d
font_02_sfnt_off0000908d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x908D 4252 bytes
SHA-256: 46e6007e7739fe099db05d57c8e1c49c1feefe6b1466956689781c1b04a03059

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