Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2b7fafe04d88462…

MALICIOUS

PDF

50.7 KB Created: 2020-08-17 00:27:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 41e182a7d5609a25770b5ad3202ea00c SHA-1: 76278938967cd35fe7501624c0830912c00212f8 SHA-256: d2b7fafe04d8846215a35af71c9ee9c0f7fac62ec3621da9c79244e24ebfed7c
194 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=measure+blood+pressure+app+android'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on cdn.shopify.com. The document body, though partially corrupted, contains text related to 'measure blood pressure app android' and the malicious URL, suggesting a lure to a potentially harmful 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.ru/pify?keyword=measure+blood+pressure+app+android In PDF document text
    • http://files.thestitchingplace.com/uploads/1/3/1/3/131398332/6393806.pdfIn PDF document text
    • http://guwozif.beautifullyuniqueinc.org/uploads/1/3/0/7/130740062/896432.pdfIn PDF document text
    • http://files.gressartstudio.com/uploads/1/3/0/7/130739542/tevuxujazav.pdfIn PDF document text
    • http://files.greenrootsgourmet.com/uploads/1/3/1/4/131453588/26d064099ed1a50.pdfIn PDF document text
    • http://files.icanreferee.com/uploads/1/3/0/8/130874213/5f8ba046.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/1/0432/2040/2337/files/zezekepepetud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5454/6590/files/72445541879.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8648/7455/files/pokemon_leaf_green_gameshark_codes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4143/9400/files/71065464468.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3733/5464/files/tabutabezelakekepasop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8609/4248/files/convert_vmx_to_vhdx.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6794/0765/files/semefajovigukuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3620/3415/files/palmistry_books_in_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5366/2876/files/93443468613.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dagezaluvonanapukinuwit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4130/0380/files/bozezetemomemegedidonenig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7988/3170/files/nebumufadazixolojasanip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0258/4480/files/osteoporosis_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9077/1110/files/biochemistry_test_questions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4334/6839/files/rilip.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000722a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x722A 5096 bytes
SHA-256: 1d4a38230fb05ca7cbb8f56fc6f4824670946d73abbf32d0765bfc15fcbc3ace
font_01_sfnt_off0000837f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x837F 10684 bytes
SHA-256: b220e8341c6a9a49107208479ba4de129dac5d31037b20fab940e5a2844e114c
font_02_sfnt_off0000a84a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA84A 16060 bytes
SHA-256: c507864d0aadc315dba4d342c7d7a7f310c5c701dcd85fab0ffb90b3504392a7