Malicious PDF — malware analysis report

Static analysis result for SHA-256 d01a1c68fd398582…

MALICIOUS

PDF

70.9 KB Created: 2020-08-30 09:42:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 30aa4b8287f6d1cb171f2688d7b69995 SHA-1: 34ebedb4022a354e34804f3f15b3a1197bd00050 SHA-256: d01a1c68fd398582490b9f66b7efc1bca6f6e4057d246ecd2a5ebb790bf7a709
152 Risk Score

Malware Insights

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

The PDF contains embedded links, with one pointing to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to 'Tipos de soldaduras pdf' and the URL 'https://ttraff.com/wix?keyword=tipos+de+soldaduras+pdf', suggesting a lure to a phishing or scam page. The ML classifier also strongly indicated maliciousness.

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/wix?keyword=tipos+de+soldaduras+pdf
    • https://cdn.shopify.com/s/files/1/0428/9508/1635/files/xifesefevul.pdf
    • https://cdn.shopify.com/s/files/1/0434/6796/4580/files/juvadulen.pdf
    • https://cdn.shopify.com/s/files/1/0451/1298/3717/files/grammar_english_free.pdf
    • https://cdn.shopify.com/s/files/1/0435/5912/5160/files/35716961998.pdf
    • https://cdn.shopify.com/s/files/1/0432/7600/9632/files/83619501421.pdf
    • https://static.usrfiles.com/ugd/b8c837_9631e454f8c64eb89350741a13eb1129.pdf
    • https://static.usrfiles.com/ugd/0a593f_9424fc985a3441bea24057d53a60535e.pdf
    • https://static.usrfiles.com/ugd/b8c837_d7e4032911c447a1b1c289acb84cc05b.pdf
    • https://static.usrfiles.com/ugd/b8c837_9ffb668673f54508b1db11e53141ba55.pdf
    • https://cdn.shopify.com/s/files/1/0435/3546/6655/files/diy_personalized_water_bottle_labels_template.pdf
    • https://cdn.shopify.com/s/files/1/0430/6308/3162/files/razilige.pdf
    • https://cdn.shopify.com/s/files/1/0462/1929/6922/files/netakebofitidutedotawetim.pdf
    • https://cdn.shopify.com/s/files/1/0437/8548/6485/files/79560967961.pdf
    • https://cdn.shopify.com/s/files/1/0434/9529/3094/files/biochemical_test_bacteria.pdf
    • https://cdn.shopify.com/s/files/1/0432/4350/3783/files/quadriceps_strengthening_after_knee_surgery.pdf
    • https://cdn.shopify.com/s/files/1/0434/6049/3474/files/2157177092.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_off0000d0b2.bin
8f96b7016a3c69cfe920f5c23dd42f95e956565a336393d70a1e2b931caf4005
pdf-font-stream PDF embedded font (sfnt) at offset 0xD0B2 4984 bytes
font_01_sfnt_off0000e1ab.bin
86d0f223933e679462cd81f4306f90ae02545efa427e2e684fc3d972bd2c90fd
pdf-font-stream PDF embedded font (sfnt) at offset 0xE1AB 13920 bytes