Malicious PDF — malware analysis report

Static analysis result for SHA-256 581b766bda1bff5d…

MALICIOUS

PDF

42.7 KB Created: 2020-08-17 03:22:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6a9e7aa4a9ed5a332d06609f53ed265b SHA-1: f1574bf25fba5919a6fe608a57ae278f2660365a SHA-256: 581b766bda1bff5ddfdbecd65ac344501c54d76b78e18e329137cbb98d843ba7
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of the primary links, 'https://ttraff.cc/pify?keyword=eliminare+account+instagram+su+android', is identified as a malicious redirector. The document body, though heavily obfuscated, contains this same URL, suggesting the primary intent is to redirect the user to malicious infrastructure. 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=eliminare+account+instagram+su+android In PDF document text
    • http://kuxikib.horsedream.ca/uploads/1/3/1/6/131636648/vevixejokukazos_jikumufibulu.pdfIn PDF document text
    • http://mururoz.thebrowneyedsusan.com/uploads/1/3/2/8/132815002/8402523.pdfIn PDF document text
    • http://zuped.baileytechnicalservices.com/uploads/1/3/0/8/130874207/tabobovobaguzileja.pdfIn PDF document text
    • http://files.thetruthresource.org/uploads/1/3/1/0/131070452/bovapozimate.pdfIn PDF document text
    • http://files.saugertiesvillagetrees.org/uploads/1/3/1/8/131856723/3693659.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/1/0428/2833/3219/files/mufesudimesof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4931/2666/files/likizimufet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0821/2638/files/magopixatiwobuditediwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8730/5629/files/didibe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6681/7689/files/nanekano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9641/6157/files/29547654655.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8515/9843/files/45620299910.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3149/4810/files/hodder_cambridge_primary_maths_stage_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6237/0202/files/71069725697.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/lilakonebasituruzazusiwa.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 4

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_off0000694a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x694A 5216 bytes
SHA-256: 662df587e47995998fc72986c744359fa2c717fe2897839bd39ec4e6b2395f77
font_01_sfnt_off00007add.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7ADD 10352 bytes
SHA-256: 70fc88266add0b3beff97dba0113d985188f50d928c84a60544bfd981b2b0c02

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