Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce9312900b822438…

MALICIOUS

PDF

41.6 KB Created: 2020-08-05 02:18:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a28148ab5b2512c6190ea419dddaa129 SHA-1: 73dda09f03057fa1a3078c326f023faf66b9d6e1 SHA-256: ce9312900b8224380ac221b2a749fcf7192daa83d895db772396103304cd585f
150 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a large link farm. The embedded URL 'https://ttraff.ru/pify?keyword=skills+list+for+resume+pdf' is identified as a malicious redirector. The document body, though heavily corrupted, contains fragments of text and URLs, reinforcing the presence of numerous external links. The primary attack pattern appears to be SEO manipulation or a link-based lure, aiming to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=skills+list+for+resume+pdf
    • http://files.mewellc.com/uploads/1/3/2/6/132695294/nizodonogadinox-favorurolupigo-rilikasob-suwerugipi.pdf
    • http://files.lemonpatches.com/uploads/1/3/0/8/130813362/temavuzugotasepu.pdf
    • http://files.saltandlightbaptist.com/uploads/1/3/2/8/132815054/safazodatadej-vopolovot-gijoxinile-kulude.pdf
    • http://files.meliousphotography.ca/uploads/1/3/2/3/132302888/8481841.pdf
    • https://cdn.shopify.com/s/files/1/0433/9036/9959/files/apc_back_ups_600_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/8049/8841/files/59351382383.pdf
    • https://cdn.shopify.com/s/files/1/0436/5864/1561/files/82930178779.pdf
    • https://cdn.shopify.com/s/files/1/0431/3333/7768/files/sowabinajarejuxeketexas.pdf
    • https://cdn.shopify.com/s/files/1/0431/7492/0347/files/nowafiwifezeninozitev.pdf
    • https://cdn.shopify.com/s/files/1/0433/9705/4631/files/bagpipes_from_baghdad_lyric.pdf
    • https://cdn.shopify.com/s/files/1/0439/8543/6830/files/giperejarura.pdf
    • https://cdn.shopify.com/s/files/1/0438/6675/1131/files/augusto_monterroso_la_oveja_negra_y_demas_fabulas.pdf
    • https://cdn.shopify.com/s/files/1/0433/0507/4838/files/pogajolo.pdf
    • https://cdn.shopify.com/s/files/1/0427/4293/9814/files/98766671033.pdf
    • https://cdn.shopify.com/s/files/1/0437/2630/7480/files/99778353621.pdf
    • https://cdn.shopify.com/s/files/1/0435/2134/3647/files/lupozelefogevox.pdf
    • https://cdn.shopify.com/s/files/1/0437/4583/7208/files/molavodetili.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006516.bin
cb0c09d1f4ee9c23d7406c439ec0159393a87198ac64da6a99dbe7ca7688a1d5
pdf-font-stream PDF embedded font (sfnt) at offset 0x6516 5144 bytes
font_01_sfnt_off00007686.bin
13e508293181c6b66a536e56d1c9cca4295acd69043ae12f93e9bc8110836075
pdf-font-stream PDF embedded font (sfnt) at offset 0x7686 10220 bytes