Malicious PDF — malware analysis report

Static analysis result for SHA-256 9326fa32e0a39e73…

MALICIOUS

PDF

41.3 KB Created: 2020-08-19 21:42:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ceeb793194dc858542f84446f9b03194 SHA-1: 4e2d38f250ab79a449b7c243690eeb84cf851589 SHA-256: 9326fa32e0a39e735f8ad51bd5caf0edd293fbd438facbcc9f58bb98b41e8673
152 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious domain, likely as part of a phishing or scam campaign. The document body and embedded links suggest a lure related to lottery claims, aiming to trick users into visiting the malicious URL. The presence of numerous external PDF links further indicates a link farm or SEO manipulation tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=national+lottery+scratchcards+claim+form
    • http://files.conniecrawford.com/uploads/1/3/1/4/131452842/nekedif.pdf
    • http://files.eepto.com/uploads/1/3/0/7/130776131/nuxudugiwijiz.pdf
    • http://files.valerielongencaustic.com/uploads/1/3/1/0/131070792/4496ee.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30106301206.pdf
    • https://cdn.shopify.com/s/files/1/0433/7372/3800/files/towogibibubax.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gumatuzonew.pdf
    • https://cdn.shopify.com/s/files/1/0439/0102/6459/files/79616673184.pdf
    • https://cdn.shopify.com/s/files/1/0434/3345/9879/files/qatar_airways_duty_free_magazine.pdf
    • https://cdn.shopify.com/s/files/1/0431/5650/4744/files/tumodutevobex.pdf
    • https://cdn.shopify.com/s/files/1/0429/1500/4582/files/kijafevovoduwomedukol.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/51906755497.pdf
    • https://cdn.shopify.com/s/files/1/0434/4994/2176/files/21771588009.pdf
    • https://cdn.shopify.com/s/files/1/0431/6112/5013/files/economist_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/2381/0203/files/kandungan_kimia_buah_belimbing_wuluh.pdf
    • https://cdn.shopify.com/s/files/1/0432/1103/0690/files/16666433076.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_off000064a2.bin
e31539e9a66b220f00db8fce1a35a3dfb3542a0890448d61cc1c8708fbae596c
pdf-font-stream PDF embedded font (sfnt) at offset 0x64A2 5332 bytes
font_01_sfnt_off00007699.bin
f0223b14ce2c9aeff7beb65f345f54a1b10d5c5157489f4b2675f1ffc3a6df0d
pdf-font-stream PDF embedded font (sfnt) at offset 0x7699 9824 bytes