Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0e1327e8c20bca7…

MALICIOUS

PDF

56.9 KB Created: 2020-07-28 08:07:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d1f3e733d7be4e9790d604388d0855f5 SHA-1: 694c52c5b58d83eba0fd3b856593180d13e8fde8 SHA-256: d0e1327e8c20bca78bfdaa7f7deb25536bfa3abedebecf10525d54d452ca5066
152 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including a redirector to a known malicious domain, suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains keywords related to 'Excel dashboards reports for dummies pdf', likely a lure to entice users to click the embedded malicious links.

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.cc/pify?keyword=excel+dashboards+reports+for+dummies+pdf
    • http://files.threadbarehands.com/uploads/1/3/0/8/130813818/9674229.pdf
    • http://files.xanderkarkruff.com/uploads/1/3/1/4/131456012/narabujevaf.pdf
    • http://files.squarepegnation.com/uploads/1/3/2/6/132695818/davaso.pdf
    • http://files.maltaglasscreations.com/uploads/1/3/1/3/131378950/memimanujeve.pdf
    • http://files.laurawritingcoach.com/uploads/1/3/0/8/130874119/vuburitonew.pdf
    • https://cdn.shopify.com/s/files/1/0431/6997/2384/files/46804293799.pdf
    • https://cdn.shopify.com/s/files/1/0437/1772/2280/files/pilevonemipiramafejit.pdf
    • https://cdn.shopify.com/s/files/1/0432/2299/1007/files/74412167605.pdf
    • https://cdn.shopify.com/s/files/1/0434/1560/1304/files/11965645648.pdf
    • https://cdn.shopify.com/s/files/1/0437/1061/1607/files/79962499945.pdf
    • https://cdn.shopify.com/s/files/1/0431/7570/6788/files/bodokadenakefezuxa.pdf
    • https://cdn.shopify.com/s/files/1/0427/8131/1132/files/77812385315.pdf
    • https://cdn.shopify.com/s/files/1/0433/1870/6341/files/74212022924.pdf
    • https://cdn.shopify.com/s/files/1/0427/4647/8759/files/mikubireforalanak.pdf
    • https://cdn.shopify.com/s/files/1/0429/0176/6310/files/tanufu.pdf
    • https://cdn.shopify.com/s/files/1/0432/6942/3269/files/zukulimevubiv.pdf
    • https://cdn.shopify.com/s/files/1/0432/0978/5512/files/80552196180.pdf
    • https://cdn.shopify.com/s/files/1/0430/7963/1012/files/8374887146.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_off0000a01e.bin
23a6b6a618f537981703759e84b0f313598b923971fecb9aa8c532e0ad404b6d
pdf-font-stream PDF embedded font (sfnt) at offset 0xA01E 5336 bytes
font_01_sfnt_off0000b23b.bin
e5c6b96c21883dc35f0524a719370400b0f8706a95a389be6af4ebab294d011b
pdf-font-stream PDF embedded font (sfnt) at offset 0xB23B 10488 bytes