Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff5b07ff6fcdfa85…

MALICIOUS

PDF

43.3 KB Created: 2020-08-02 20:58:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: de6f061a4289937a4a5edb64262c5bc7 SHA-1: d3a2777661c8d13067ae179cb6013c3747336478 SHA-256: ff5b07ff6fcdfa853ff1321fbb653d64fff5aa6bcc06d0155b370794deb2ea4c
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one pointing to a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document body text appears to be a lure related to 'craftsman weed trimmer parts', suggesting a phishing or scam attempt. The presence of numerous links, including those hosted on Shopify, indicates a likely attempt to distribute malware or redirect users to malicious 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.com/pify?keyword=craftsman+weed+trimmer+parts
    • http://files.farmacyorchard.com/uploads/1/3/0/9/130969923/dasuwe.pdf
    • http://files.sayantattoocompany.com/uploads/1/3/1/6/131606890/7538586.pdf
    • http://files.cassandrakgolden.com/uploads/1/3/1/3/131379530/9fc4b114cebce.pdf
    • http://files.santiagolopezphoto.com/uploads/1/3/0/7/130776460/lizisiwamisi.pdf
    • http://files.sahityasangam.org/uploads/1/3/1/8/131856096/5973a.pdf
    • https://cdn.shopify.com/s/files/1/0428/8253/1481/files/pixorigixexe.pdf
    • https://cdn.shopify.com/s/files/1/0431/1144/8729/files/loxiwim.pdf
    • https://cdn.shopify.com/s/files/1/0431/6869/4432/files/danodalasapikamu.pdf
    • https://cdn.shopify.com/s/files/1/0431/0643/5232/files/sebamumomu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rasamonuje.pdf
    • https://cdn.shopify.com/s/files/1/0438/0835/8561/files/air_optix_rebate.pdf
    • https://cdn.shopify.com/s/files/1/0432/8698/6908/files/moxopib.pdf
    • https://cdn.shopify.com/s/files/1/0438/9391/5800/files/mumakujolize.pdf
    • https://cdn.shopify.com/s/files/1/0434/7317/4680/files/pijigar.pdf
    • https://cdn.shopify.com/s/files/1/0428/4245/6231/files/topifu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8432/4770/files/rijarepejenodatogigikolam.pdf
    • https://cdn.shopify.com/s/files/1/0431/9870/9918/files/ledixomuxejeka.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_off00006b0f.bin
a3fe19ebb67b35e217572a41a3984e6b536df28a74b8e0e0b908263313355757
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B0F 5152 bytes
font_01_sfnt_off00007c8f.bin
50594a10c1b4952e2c3de966d731ebc183a301b2037486148f85a33595981b9a
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C8F 10328 bytes