Malicious PDF — malware analysis report

Static analysis result for SHA-256 07f9649c95e8f2be…

MALICIOUS

PDF

40.5 KB Created: 2020-08-06 03:51:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7ac025b2ea7818528534111be726886d SHA-1: ef8588590ecadc8214c52ec5d79b8c8c7d348cf5 SHA-256: 07f9649c95e8f2be8067591cb1d4311614be8691a47f0db6da6bcaa65ff7a381
154 Risk Score

Malware Insights

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

This PDF file contains a large number of embedded links, many of which point to external PDF files hosted on Shopify. The primary link directs to a known malicious redirector, suggesting an attempt to lead the user to malicious content. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the document's structure and embedded URLs indicate a link farm and redirector attack pattern.

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=medicinal+and+aromatic+plants+of+nepal+pdf
    • http://files.creativefooddrive.com/uploads/1/3/2/7/132740327/4483967.pdf
    • http://files.jqbrattonmedia.com/uploads/1/3/1/4/131408209/4092692.pdf
    • http://files.olympusvillas.com/uploads/1/3/1/4/131437725/58bb2bbfb38a.pdf
    • http://files.jewellerybyjody.com/uploads/1/3/1/4/131437464/fafubidugef.pdf
    • http://tifeji.livinglikejesus.org/uploads/1/3/1/4/131483372/wujevitap_sejojojudojoxig.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/2318/7618/files/natunejubar.pdf
    • https://cdn.shopify.com/s/files/1/0432/0962/1665/files/xesoku.pdf
    • https://cdn.shopify.com/s/files/1/0431/4441/3341/files/fejirizojerilake.pdf
    • https://cdn.shopify.com/s/files/1/0437/6916/8021/files/noziwebejibosenuzitezogu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/46605756913.pdf
    • https://cdn.shopify.com/s/files/1/0429/9377/8837/files/88538788146.pdf
    • https://cdn.shopify.com/s/files/1/0446/6094/9155/files/ccna_free_dumps.pdf
    • https://cdn.shopify.com/s/files/1/0428/3406/7615/files/felosebikize.pdf
    • https://cdn.shopify.com/s/files/1/0433/5144/1563/files/26123127258.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_off0000618a.bin
bade010da56c576b54e92035ff1a3007eaa30903170955098c0f475c1cf98e77
pdf-font-stream PDF embedded font (sfnt) at offset 0x618A 5304 bytes
font_01_sfnt_off00007386.bin
69d0aadaf9ff88995f3c98e623f95bb70da600311272570e9e1ee6ada87864e5
pdf-font-stream PDF embedded font (sfnt) at offset 0x7386 9852 bytes