Malicious PDF — malware analysis report

Static analysis result for SHA-256 f72a8060e50c0008…

MALICIOUS

PDF

38.2 KB Created: 2020-08-12 05:59:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e6c5597111a478e3653092bf4ecd650e SHA-1: e5b2373b8fd21098c97054f872c43873c382f1c4 SHA-256: f72a8060e50c000845bcc17bb71654cdd47ed772b7c391b8151e1b20caa5c10b
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, disguised as a Hafele catalogue. The ML classifier strongly indicated maliciousness. The document body and embedded link objects confirm the presence of multiple external links, including the malicious redirector, suggesting a phishing or scam attempt to lead the user to further 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.cc/pify?keyword=hafele+catalogue+pdf
    • http://files.spiritualistfellowshipchurchofne.com/uploads/1/3/1/0/131070581/fdfaa9.pdf
    • http://files.keepactiveosteopathy.com.au/uploads/1/3/2/6/132682882/89b4d2819e.pdf
    • http://files.cookcreativemedia.com/uploads/1/3/0/7/130775850/xuwodolow.pdf
    • http://files.mtntrade.net/uploads/1/3/0/8/130814066/fitasefoxinavon-bovijiwubejegi.pdf
    • https://cdn.shopify.com/s/files/1/0429/9695/7343/files/10627823858.pdf
    • https://cdn.shopify.com/s/files/1/0437/2935/4906/files/apiculture_in_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0451/3690/4346/files/ghatna_chakra_for_uppcs_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0431/2327/7973/files/story_central_4_student_book_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0448/4258/2176/files/abordagens_da_psicologia.pdf
    • https://cdn.shopify.com/s/files/1/0428/5412/1635/files/mogawetuwux.pdf
    • https://cdn.shopify.com/s/files/1/0432/6319/7337/files/nursing_care_of_tracheostomy_patient.pdf
    • https://cdn.shopify.com/s/files/1/0437/0956/3035/files/luxipavomasupedogogusodel.pdf
    • https://cdn.shopify.com/s/files/1/0435/6482/6773/files/relekadusajubujilariju.pdf
    • https://cdn.shopify.com/s/files/1/0428/8118/8003/files/pilowopikumevina.pdf
    • https://cdn.shopify.com/s/files/1/0429/6956/3290/files/79991517879.pdf
    • https://cdn.shopify.com/s/files/1/0435/5561/8977/files/34463979766.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_off000050de.bin
2459fe0267db7a20e7864d029c3b2acdb88238e60c410c3f6f613550dbcaa513
pdf-font-stream PDF embedded font (sfnt) at offset 0x50DE 5008 bytes
font_01_sfnt_off000061fe.bin
cb28e921167395392b00a1444fe68ee9c4dff6f1ac37021dea9691ef947dbeac
pdf-font-stream PDF embedded font (sfnt) at offset 0x61FE 12968 bytes