Malicious PDF — malware analysis report

Static analysis result for SHA-256 6cca197d5c4d3cb7…

MALICIOUS

PDF

46.8 KB Created: 2020-08-22 02:07:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fb08479d8eeea75c491abeea630add81 SHA-1: 49592bfafc760d971de170289cbebe260c67597d SHA-256: 6cca197d5c4d3cb71a0c353a28bdd61da857c04316b2a5b128c636fecb115374
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector at 'https://ttraff.com/pify?keyword=iabp+guidelines+ppt'. The document body, though heavily obfuscated, also contains this URL and appears to be a lure related to 'Iabp guidelines ppt'. The presence of numerous external PDF links suggests a link farm or redirection strategy to distribute 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.com/pify?keyword=iabp+guidelines+ppt
    • http://pupefinax.robynpforrryan.com/uploads/1/3/2/6/132696063/pegekepogon.pdf
    • http://files.michiganpreventionassociation.org/uploads/1/3/0/7/130739351/cce1316013e9150.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0441/4350/9656/files/fi_6130z_driver.pdf
    • https://cdn.shopify.com/s/files/1/0434/6049/3465/files/causes_of_overpopulation_in_africa.pdf
    • https://cdn.shopify.com/s/files/1/0434/3837/5074/files/zisujiri.pdf
    • https://cdn.shopify.com/s/files/1/0434/3070/7356/files/67474715509.pdf
    • https://cdn.shopify.com/s/files/1/0435/4398/6330/files/subuxawatubesevisugojup.pdf
    • https://cdn.shopify.com/s/files/1/0434/6177/1430/files/fexilajuvagekovosakob.pdf
    • https://cdn.shopify.com/s/files/1/0434/3519/6568/files/rozik.pdf
    • https://cdn.shopify.com/s/files/1/0432/5025/3984/files/abba_mamma_mia_free_piano_sheet_music.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b94.bin
a3ffea3b938af1fbf08a6e63ed6f50c50afca8af5920221a9c5f478e3468910d
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B94 4880 bytes
font_01_sfnt_off00007c29.bin
a336b8d292f04bc773a2ca2ac36661902e2cd6021fcfb9a3dd309b87c1706b15
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C29 10696 bytes
font_02_sfnt_off0000a0b8.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0xA0B8 4324 bytes