Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6a0efb0507ba5ac…

MALICIOUS

PDF

38.1 KB Created: 2020-07-12 01:48:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d6303f5853dd3cef7040af6219e03b92 SHA-1: 159c6d4e0a021414c3066fe8bc550c59a1b13af9 SHA-256: c6a0efb0507ba5acae53381485fa0a20ce12e9ba2c8fa3e482f2924bf7dc136c
152 Risk Score

Malware Insights

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

The PDF was flagged as malicious by a machine learning classifier and contains numerous embedded links. One critical heuristic identified a link to a known malicious redirector, and another identified a large link farm, suggesting a SEO spam or phishing campaign. The document body contains a URL that appears to be part of the malicious infrastructure.

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.com/pify?keyword=get+on+top+unblocked+games+76
    • http://files.edhgs.com/uploads/1/3/1/4/131408529/lujaremokike_nezuki_derunelizaxeti_kelabij.pdf
    • http://files.azkillerbeessoftball.com/uploads/1/3/0/8/130874518/jemizip.pdf
    • http://files.moonrockman.com/uploads/1/3/1/3/131383588/01c44b6d.pdf
    • http://files.easternsitedevelopment.com/uploads/1/3/0/7/130740123/b87aad9f3d84332.pdf
    • http://files.falafelcafe.com/uploads/1/3/0/8/130874477/daturoguman_pixezurotunab.pdf
    • http://files.ccharrogate.com/uploads/1/3/2/6/132682892/8fd25c86.pdf
    • http://files.harrisburghigh.org/uploads/1/3/1/3/131379371/d7ff44.pdf
    • https://kugolofoto.files.wordpress.com/2020/06/20344717452.pdf
    • https://menorolimi.files.wordpress.com/2020/06/nitokuforavovoraxe.pdf
    • https://sizelomitek.files.wordpress.com/2020/06/97534229220.pdf
    • https://setuduf.files.wordpress.com/2020/07/88482109090.pdf
    • https://wolekotawati.files.wordpress.com/2020/07/bosuvaridewuvob.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37394074323.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/17612659915.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86593634255.pdf
    • https://cdn.shopify.com/s/files/1/0433/5557/0341/files/5153493642.pdf
    • https://cdn.shopify.com/s/files/1/0430/6049/4490/files/66802952964.pdf
    • https://cdn.shopify.com/s/files/1/0429/6966/1589/files/43787072159.pdf
    • https://cdn.shopify.com/s/files/1/0432/2865/9870/files/getivefubapotatedos.pdf
    • https://cdn.shopify.com/s/files/1/0430/3080/6679/files/zokapalodoxagesaf.pdf
    • https://cdn.shopify.com/s/files/1/0431/6741/6488/files/xamejabab.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_off0000568f.bin
7cdfe26aa942b86eb1d5c9d4e791bb04809e61cf5008737f3a6bc1b9ce55a7cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x568F 5600 bytes
font_01_sfnt_off00006991.bin
e5a751f914567c73c512c012310434806b46a5e6ce10c4e617e0127b88a6dd04		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6991 9720 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.