Malicious PDF — malware analysis report

Static analysis result for SHA-256 9402fc10498eb930…

MALICIOUS

PDF

48.4 KB Created: 2020-08-13 23:42:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 233339c55660189cbdc5d0aba144f306 SHA-1: a79c76eda7320bb3a81e7b63f8a2592f0a25771c SHA-256: 9402fc10498eb930bad03d92417dd9d76639f2c0ff32e54854caecea92e0978d
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to `https://ttraff.cc/pify?keyword=android+10+xiaomi+a2`. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links to other PDFs, many hosted on Shopify. The ML classifier strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the malicious URL and references to 'android 10 xiaomi a2', suggesting a lure for potentially 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=android+10+xiaomi+a2 In PDF document text
    • http://lubiradu.theislandernewspaper.com/uploads/1/3/1/8/131856271/woliremesakoput.pdfIn PDF document text
    • http://gerun.twcnpc.com/uploads/1/3/0/8/130814328/volijaru.pdfIn PDF document text
    • http://mevozela.livelyimpact.com/uploads/1/3/0/9/130969060/b91c76d58b8ad.pdfIn PDF document text
    • http://files.ourhiddenhills.ca/uploads/1/3/0/8/130874284/luzuxabulu.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/1/0437/1090/6518/files/4168012961.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5381/8790/files/99343698282.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1517/5335/files/western_union_receipt.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0531/2156/files/accountancy_notes_class_11_cbse.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2756/9576/files/54286110104.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1664/2975/files/car_diesel_engine_parts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4504/4892/files/simuraraguliz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6282/0005/files/caracteristicas_del_materialismo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9413/8268/files/kutegavuraxuxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2465/3224/files/30528963140.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9869/4042/files/vuvilibebeku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/33078626275.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E88 5144 bytes
SHA-256: 064b6e039e610c01bd6a62ce943453bbe90900736b748abf51e34535a776dc48
font_01_sfnt_off00006feb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FEB 2108 bytes
SHA-256: 1d739be46a300e0470098b03cb3525ce218fda25c712b9663aaff7a7ecef4354
font_02_sfnt_off000079b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79B9 10420 bytes
SHA-256: 577d488160a2ec9e56a2ec2bc1db150d0d4f3baa1c9bbabc53e5a52753b59b30
font_03_sfnt_off00009d90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D90 16728 bytes
SHA-256: 15def471f222bdc4c1830d356d4fd1f0206e3a84408f81709b6ccab1dca1ef47