Malicious PDF — malware analysis report

Static analysis result for SHA-256 a735abaf74946a87…

MALICIOUS

PDF

40.1 KB Created: 2020-08-22 20:57:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 89e8d44572a5445d1845c3407e71bace SHA-1: 26d78dfb4233658bf96952e120f07a98b1ff1eee SHA-256: a735abaf74946a8723889adbc5840dc887c6a06bdf3785f39b29b1014fc7eebf
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=3dmark+basic+edition+free'. This URL is presented within the document body, disguised as a free download for '3dmark basic edition free'. The file also contains a link farm heuristic, indicating a large number of external links, with the first being 'https://cdn.shopify.com/s/files/1/0433/9659/5868/files/67074649570.pdf'. No scripts were extracted, but the presence of the malicious redirector strongly suggests a phishing or social engineering attempt to lead the user to malicious content.

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=3dmark+basic+edition+free In PDF document text
    • http://files.mrsararadian.com/uploads/1/3/1/4/131453676/725d0ad5d8b20d.pdfIn PDF document text
    • http://files.cavershamholistics.co.uk/uploads/1/3/1/0/131070774/labifenejoseravajij.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/1/0433/9659/5868/files/67074649570.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9960/9505/files/everything_happens_for_a_reason_book_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0486/9277/files/59287062622.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2368/7067/files/81938391138.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/7742/2494/files/boldly_i_approach_piano_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3172/2141/files/44419261615.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7950/5822/files/convert_cdr_format_to.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4638/7367/files/43252240896.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6517/0334/files/gta_vc_cheater_apk_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7155/3189/files/gotalutomivepi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1762/3957/files/statistical_learning_theory_vapnik_download.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 8

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_off00005e41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E41 5408 bytes
SHA-256: 1526be888d38fc43692325692c27952bf426029622c551223ce495fe459e7570
font_01_sfnt_off00007081.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7081 10364 bytes
SHA-256: 5cc5725347c42e77e63d9fc6ac3c520a873faf7992cef9d2e7c1aa43a5ffee04

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