Malicious PDF — malware analysis report

Static analysis result for SHA-256 483ee32c67f5f949…

MALICIOUS

PDF

42.1 KB Created: 2020-09-20 23:52:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d050c6e092547200c332bb80710c3a5c SHA-1: ca2ff8bd17d9b9a2b75fa32150e60a58d0fe0145 SHA-256: 483ee32c67f5f949b09ec4fa6db96e5d9e8b9c1ae4473630262a237e0481d2f5
152 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one heuristic specifically identifying a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.me/wix?keyword=zep+drain+care+review', suggesting a lure related to a 'Zep drain care review'. The presence of a large number of external PDF links, many hosted on Shopify, indicates a link farm designed to distribute traffic or host 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.me/wix?keyword=zep+drain+care+review
    • http://files.ravishedbyhisbeauty.com/uploads/1/3/0/9/130969855/ziketapukipewavimiv.pdf
    • http://files.alpinemercantile.shop/uploads/1/3/0/7/130739204/mipopele-nimogidutedop.pdf
    • https://cdn.shopify.com/s/files/1/0439/2170/3067/files/44612849822.pdf
    • https://cdn.shopify.com/s/files/1/0429/3469/8147/files/27250899950.pdf
    • https://cdn.shopify.com/s/files/1/0431/6259/9583/files/leather_tobbaco_pouch.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/99594865370.pdf
    • https://cdn.shopify.com/s/files/1/0439/2216/1832/files/glencoe_algebra_1_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0432/3983/3767/files/91932717365.pdf
    • https://bfe5f388-751c-4816-bfac-7dc25b57a7b0.filesusr.com/ugd/b8bbd7_673a0f156c894bf1a353585b2473d1df.pdf?index=true
    • https://0352267f-df5a-4964-879b-c04138083837.filesusr.com/ugd/493135_66717ea4e26e4b30b33304cacc2a25bf.pdf?index=true
    • https://70ca833b-b7d2-46ac-aebc-ae7887dc668f.filesusr.com/ugd/4c3ae3_4eb01aa1318c4b6e84307eafa8aa122c.pdf?index=true
    • https://3c55b9df-14ea-476b-97b2-f2b9066673d2.filesusr.com/ugd/808cd0_ee31fa8673ef46c08cc37481b2f9119b.pdf?index=true
    • 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_off00006692.bin
0814d3fa1b2e0e5fc3e4bd733448f9745e9a82ab261fd32b98613a843233a295
pdf-font-stream PDF embedded font (sfnt) at offset 0x6692 4964 bytes
font_01_sfnt_off0000779f.bin
ee4f16922a57b91c2771c8e048bb82bcdef1d962507caecfcc97531e92630706
pdf-font-stream PDF embedded font (sfnt) at offset 0x779F 10608 bytes