Malicious PDF — malware analysis report

Static analysis result for SHA-256 d51ba3b62ddfbb2d…

MALICIOUS

PDF

41.0 KB Created: 2020-09-09 18:07:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cb495983b8e8797a10429b24e0e356fc SHA-1: 7eecb6bad10fb4670224719671bff4ccea1997ee SHA-256: d51ba3b62ddfbb2d0e966cdbfb571dc347d2ac8b1559fe6caaa128faf07b0bcf
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF contains a link to a redirector, https://ttraff.me/wix?keyword=wondershare+mobilego+latest+version+crack, which is classified as malicious. The document body and embedded links suggest a lure for downloading cracked software, which is a common social engineering tactic. The presence of numerous links to Shopify-hosted PDFs, while some are benign, indicates a link farm strategy to improve SEO for malicious content.

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.me/wix?keyword=wondershare+mobilego+latest+version+crack
    • http://files.birgfish.com/uploads/1/3/2/8/132815054/bovomaxibuxu.pdf
    • http://kagezu.lorraine-lopez.com/uploads/1/3/0/7/130776487/muzud_xulon_lugazobodexik.pdf
    • http://vezole.canadiandoveassociation.com/uploads/1/3/1/4/131406717/5028166.pdf
    • https://cdn.shopify.com/s/files/1/0432/3826/0898/files/xabibunogejome.pdf
    • https://cdn.shopify.com/s/files/1/0429/9712/1178/files/76906637386.pdf
    • https://cdn.shopify.com/s/files/1/0428/3305/1814/files/7932317222.pdf
    • https://cdn.shopify.com/s/files/1/0429/7526/4924/files/33468135495.pdf
    • https://cdn.shopify.com/s/files/1/0434/8654/4022/files/deadlock_report_sql_server_2016.pdf
    • https://cdn.shopify.com/s/files/1/0430/9581/8404/files/catena_mundi_download.pdf
    • https://cdn.shopify.com/s/files/1/0462/5262/1973/files/5093151035.pdf
    • https://cdn.shopify.com/s/files/1/0435/9428/5218/files/44820064426.pdf
    • https://cdn.shopify.com/s/files/1/0432/5172/8546/files/lazoxofutuxarej.pdf
    • https://cdn.shopify.com/s/files/1/0435/2697/9739/files/61241577728.pdf
    • https://cdn.shopify.com/s/files/1/0430/2041/9226/files/vevodotelawexosibeniduje.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_off00006269.bin
696a0bfa1b3d835978ca2285ad17fbcad20ba5540e995b4619ee4046cda6d799
pdf-font-stream PDF embedded font (sfnt) at offset 0x6269 5632 bytes
font_01_sfnt_off00007577.bin
82402a2f3b819b936529687d2b86091b3dfeb1a1020b355ed63311053e6c6aff
pdf-font-stream PDF embedded font (sfnt) at offset 0x7577 9848 bytes