Malicious PDF — malware analysis report

Static analysis result for SHA-256 736657982de2c2f7…

MALICIOUS

PDF

40.7 KB Created: 2020-08-12 04:22:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 265dd204c269a1f6336d5e7840c2e785 SHA-1: 5879cdf7d0fe5b28f2803b0298c16c4f82d1994a SHA-256: 736657982de2c2f70cd0d7a5962d9de0b43ce00982c7e2385aa093744ac4aa12
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, with one critical heuristic identifying a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=adam+s+apple+wayne+shorter+pdf'. Another heuristic indicates a large number of external PDF links, suggesting a link farm or SEO spamming operation. The ML classifier strongly flagged this PDF as malicious. No scripts were extracted, but the presence of embedded URLs and the link farm behavior points to a phishing or redirection attempt.

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=adam+s+apple+wayne+shorter+pdf
    • http://files.mreshistory.com/uploads/1/3/1/3/131381006/fosotodole-korinotanum-mufup-nowomopudosix.pdf
    • http://files.amsitraining.com/uploads/1/3/0/7/130739764/xuloruxevudozonogal.pdf
    • http://nidet.zebasiddiqi.com/uploads/1/3/2/6/132682076/waxujiwa-datosovisodusu.pdf
    • http://files.blues-city-kids.com/uploads/1/3/1/4/131438161/xekusulumonapifewa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0441/3063/1832/files/fable_3_torrent.pdf
    • https://cdn.shopify.com/s/files/1/0433/6844/8152/files/34194653733.pdf
    • https://cdn.shopify.com/s/files/1/0435/3123/9588/files/domijubekatapazadataluzib.pdf
    • https://cdn.shopify.com/s/files/1/0433/9728/3992/files/jilininavogedo.pdf
    • https://cdn.shopify.com/s/files/1/0432/8770/7804/files/26344541532.pdf
    • https://cdn.shopify.com/s/files/1/0430/0816/3993/files/52447403045.pdf
    • https://cdn.shopify.com/s/files/1/0427/8000/0422/files/64858142512.pdf
    • https://cdn.shopify.com/s/files/1/0431/2160/6820/files/analytical_reasoning_techniques.pdf
    • https://cdn.shopify.com/s/files/1/0429/7208/6435/files/baghdadi_qaida.pdf
    • https://cdn.shopify.com/s/files/1/0430/8746/2551/files/7567577461.pdf
    • https://cdn.shopify.com/s/files/1/0437/1732/9064/files/search_files_on_google.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000060e7.bin
f1efeb24b698197efa8f273eac5bce09d056ce76070a24818d720c501b20c5fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60E7 5464 bytes
font_01_sfnt_off00007364.bin
5931a730d1f4923d868756d9678cc0f703817647b6bcb59b719ebd25fc1b8ec0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7364 10240 bytes

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