Malicious PDF — malware analysis report

Static analysis result for SHA-256 dabc29cc4ced447a…

MALICIOUS

PDF

33.7 KB Created: 2020-08-19 19:28:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 849fff022e51f82d2a79eb13d368004b SHA-1: ffc6473e71e63ec55c5dedce51d3ee1e0c8bfe5c SHA-256: dabc29cc4ced447ae82412631617555b39fbe7a83f00bd9cd8a80462e7257755
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one heuristic specifically identifying it as a 'PDF SEO Link Farm'. The primary malicious link, 'https://ttraff.cc/pify?keyword=aptoide+on+apkpure', suggests a redirection to potentially harmful content or a phishing attempt. The document body, though heavily obfuscated, contains references to the malicious URL and other PDF links, reinforcing the attack pattern.

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=aptoide+on+apkpure In PDF document text
    • http://nidera.tradbowmt.org/uploads/1/3/1/3/131379211/9e5b3.pdfIn PDF document text
    • http://files.salemumpires.com/uploads/1/3/1/4/131438423/4897237.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/1/0429/0415/8364/files/gefokeseb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9710/2238/files/lurikuxokobu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2084/5210/files/nugixufulizefeguxezo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2192/5525/files/nucleophilic_addition_reaction_of_carbonyl_compounds.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9707/9460/files/engineering_internship_interview_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4021/1097/files/42177243795.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/4989/8399/files/worthy_of_it_all_chords_g.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6562/9077/files/88749130448.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3525/5203/files/shrine_of_amana_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8982/1847/files/wavodoginew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3062/5947/files/devukuzepiju.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 3

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_off000048b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48B1 4796 bytes
SHA-256: c366051b4952e19827e1549cbc063e56ca5392f07f970e6e58d1c034c8786957
font_01_sfnt_off00005907.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5907 9804 bytes
SHA-256: 78399d420d0180628359be66a61bef47971fef2f3628b9786092b7fae01a3a82

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