Malicious PDF — malware analysis report

Static analysis result for SHA-256 245030698a33f243…

MALICIOUS

PDF

40.3 KB Created: 2020-08-25 01:42:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0f9422c330a4a391581387d87897f7c2 SHA-1: de42c548f33bb3e1261150f0edcb4512eb129f07 SHA-256: 245030698a33f2432a244010d4d91c0b5024bd431188d98c1b32a89af88e4be1
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector infrastructure at https://ttraff.cc/pify?keyword=nice+guidelines+crohn%2527+s+disease+treatment. The document body, though partially obfuscated, also contains this URL and other links to PDF files hosted on various domains, suggesting a link farm or redirection strategy. The ML classifier strongly supports the malicious nature of this PDF.

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=nice+guidelines+crohn%2527+s+disease+treatment In PDF document text
    • http://files.achieveprovideo.com/uploads/1/3/0/8/130814754/db3eae0eaad.pdfIn PDF document text
    • http://garoduf.sizzlegrills.co.uk/uploads/1/3/0/8/130874232/tolixudawugufexu.pdfIn PDF document text
    • http://files.jashancatering.com/uploads/1/3/0/7/130776735/lepisobanijukal-sevotol-dubuxekavab-watazipemozu.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/1/0433/1234/9334/files/social_studies_culture_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5845/3928/files/43671268304.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1187/3688/files/adobe_printer_free_download_full_version.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/9247/9901/files/residential_tenancy_branch_bc_condition_inspection_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8215/3112/files/41402358422.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1748/4957/files/bionic_arm_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5507/7781/files/integer_to_string.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6152/6166/files/pixuworuma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1616/7328/files/turovuzogiripedovibutowa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/7671/0563/files/huttodyake_sayodyake_full_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/7256/0790/files/free_blackjack_games_for_fun_no.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
🗂 Part of campaign: jashancatering.com 3 samples

Related samples 6

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_off00005fe4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FE4 5356 bytes
SHA-256: 1bc7ccad77b604f98fad82c84bc420f7ff8606cd0f9588bda27c61f4eec5b8c1
font_01_sfnt_off000071ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71EC 10048 bytes
SHA-256: a4150a144dba0ebdf1b9d7c4ebb3b8a4840eaa9ac16d5c09b3f8bdc28b7a321f

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