Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6abb15fcc6d88f2…

MALICIOUS

PDF

43.2 KB Created: 2020-08-03 17:29:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2dada5d486ed11829b147f2674f452b8 SHA-1: 41e7d3dee37b28d96418edd6be7d7b841554f59b SHA-256: d6abb15fcc6d88f245b78f02dd85cb0c9c65c23e1c32262af8c1d3a4ca7addec
152 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with one identified as a known malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external PDF links, suggesting a link farm designed to attract traffic or distribute malicious content. The ML classifier also strongly flagged this PDF as malicious. The embedded URLs are the primary indicators of malicious activity, likely leading to phishing or malware download sites.

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=verbal+communication+in+the+workplace+pdf
    • http://files.knightsofmotorhoming.com/uploads/1/3/1/8/131856290/666505.pdf
    • http://files.alioleary.com/uploads/1/3/2/7/132740352/8938471.pdf
    • http://files.numberswithenemies.com/uploads/1/3/1/8/131858287/2738360.pdf
    • http://files.daleismopeners.com/uploads/1/3/0/8/130873741/pifufukefanaduzi.pdf
    • http://files.sandandwater02020.com/uploads/1/3/1/3/131380825/9e697204a87ce.pdf
    • https://cdn.shopify.com/s/files/1/0440/5601/9109/files/saxeva.pdf
    • https://cdn.shopify.com/s/files/1/0431/5476/8021/files/51574031411.pdf
    • https://cdn.shopify.com/s/files/1/0430/7766/4929/files/37635187090.pdf
    • https://cdn.shopify.com/s/files/1/0431/6738/3716/files/kejorunibomutuwozok.pdf
    • https://cdn.shopify.com/s/files/1/0433/3623/7206/files/2951139391.pdf
    • https://cdn.shopify.com/s/files/1/0431/6761/3087/files/39281915055.pdf
    • https://cdn.shopify.com/s/files/1/0429/3633/6540/files/zusibupa.pdf
    • https://cdn.shopify.com/s/files/1/0434/2169/6149/files/why_are_steam_downloads_so_slow.pdf
    • https://cdn.shopify.com/s/files/1/0436/1850/0765/files/nekijep.pdf
    • https://cdn.shopify.com/s/files/1/0431/9232/0161/files/93200351752.pdf
    • https://cdn.shopify.com/s/files/1/0431/0905/6666/files/zefevofopovilipijuvure.pdf
    • https://cdn.shopify.com/s/files/1/0430/7153/7301/files/pawosodexaxavobipow.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_off00006b60.bin
66a16b0c595760ae9ae5422efa475e7d5659ab9bc47130e03adea33dd063712c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B60 5480 bytes
font_01_sfnt_off00007de9.bin
1848af40f7084b93f1cba31a4acdf35ea550cf18657c84eb4e7d8c5cf77328b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DE9 9864 bytes

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