Malicious PDF — malware analysis report

Static analysis result for SHA-256 44e36b91e876186b…

MALICIOUS

PDF

38.4 KB Created: 2020-08-23 17:53:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b98138d10405e4b0d65ee0941b91ec64 SHA-1: 8d49e40de7c5c7a887b207e392b2d0b980cc03f5 SHA-256: 44e36b91e876186b1c5e118ac969d1f92fcf5fa5b9ccd0b13de6c34c83a697a7
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector pointing to 'ttraff.com'. Another critical heuristic indicates a PDF link farm, with the first URL being 'cdn.shopify.com/s/files/1/0428/4717/4812/files/nukodapomewavigipavikejaw.pdf'. The document body, though heavily obfuscated, contains text that appears to be a 'crabber 24 test report' and the malicious URL, suggesting a lure to a phishing or malware distribution site.

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.com/pify?keyword=crabber+24+test+report In PDF document text
    • http://files.how2productions.co.uk/uploads/1/3/1/3/131379830/77a25f40465cb7.pdfIn PDF document text
    • http://files.staywhole.net/uploads/1/3/0/8/130813710/7115585.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/1/0428/4717/4812/files/nukodapomewavigipavikejaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6584/3620/files/avivamento_sustentvel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2143/4005/files/49063281168.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7743/5556/files/perl_one_liner_regex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8959/0427/files/best_ebook_reader_app_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7785/1550/files/64769337225.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8407/1583/files/list_of_regions_in_the_philippines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3110/9540/files/adaptec_6405_s.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/kulimazuxufovi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7367/4142/files/potaduli.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004d05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D05 4796 bytes
SHA-256: a089870500265c865435700ac64b8185a2548d575231dca9267b0b3f2220fc45
font_01_sfnt_off00005d61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D61 9776 bytes
SHA-256: 1ad4b3e04039911973c52d2177773b828887ea163a3090fbfe7cdaf8bee250e0
font_02_sfnt_off00007eec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EEC 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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