Malicious PDF — malware analysis report

Static analysis result for SHA-256 2163c3ab58c447da…

MALICIOUS

PDF

41.7 KB Created: 2020-08-08 11:41:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2759e2b0d97eae5fc20b63e615793b85 SHA-1: 4985525d640942abf7eec47c74699f66b0a45207 SHA-256: 2163c3ab58c447da24687b231758d24a6df3dd80cace59fd79b3409c421892d7
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, including a critical finding of a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=300+best+canadian+bread+machine+recipes+pdf'. The document body, though heavily obfuscated, appears to contain text related to recipes and the wkhtmltopdf tool, suggesting a lure to disguise malicious links. The presence of a link farm and the ML classifier's high confidence further support the malicious nature of this document.

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.ru/pify?keyword=300+best+canadian+bread+machine+recipes+pdf In PDF document text
    • http://files.karenabbattistadressage.com/uploads/1/3/2/3/132302780/5526628.pdfIn PDF document text
    • http://files.michaelsalomone.com/uploads/1/3/2/8/132814949/2433556.pdfIn PDF document text
    • http://files.starbabyknitwear.com/uploads/1/3/0/7/130739452/1436026.pdfIn PDF document text
    • http://files.dirt-sailing.com/uploads/1/3/1/3/131383429/4113264.pdfIn PDF document text
    • http://files.hutchingsfraktur.com/uploads/1/3/2/6/132681617/nidevovituvuz.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/1/0433/0687/7080/files/46552055365.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8421/8532/files/94395549643.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8782/1984/files/ranagazavajuwinuropuza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6605/5063/files/pamuranulane.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7206/8520/files/working_of_digital_storage_oscilloscope.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/viruxirekosarobavogerij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7513/3859/files/46503599087.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8475/0747/files/33941667969.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3123/2661/files/zip_a_folder_in_linux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6208/4262/files/xepuki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1888/7073/files/9962923694.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_off00006397.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6397 5712 bytes
SHA-256: 70d6f42cb54f9952890dba26c2036d7d1a10714e39ef866ab249b73683fdcb79
font_01_sfnt_off000076d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76D6 10232 bytes
SHA-256: be61d6058d826287782c515047b045ff382eafee9c71cef0f9b586e447f13f61

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