Malicious PDF — malware analysis report

Static analysis result for SHA-256 96aeba096a7a1fa2…

MALICIOUS

PDF

48.2 KB Created: 2020-08-03 22:27:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d9a5d595b67ab8af2223df472952d607 SHA-1: db6795307a28a070e0c7c74c408c6349fc99c89b SHA-256: 96aeba096a7a1fa2b049d93e797a6005ec68e02ba4d233d4467bf4f55d2924f8
152 Risk Score

Malware Insights

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

The PDF document was flagged as malicious by multiple heuristics, including a critical finding for a redirector link and a link farm. The ML classifier also returned a high confidence score. The document body contains numerous URLs, with the primary malicious redirector being https://ttraff.cc/pify?keyword=ludzie+bezdomni+test+pdf. The presence of a link farm suggests an attempt to distribute malicious content or engage in SEO abuse to lure victims.

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=ludzie+bezdomni+test+pdf
    • http://tadozup.snohomishmidwives.com/uploads/1/3/1/4/131438869/remebaruwojeje.pdf
    • http://files.walkthruyoga.com/uploads/1/3/0/7/130740231/ripofixufovotaja.pdf
    • http://files.mtbafghanistan.org/uploads/1/3/0/7/130740090/7577631.pdf
    • http://files.realfitforreallife.com/uploads/1/3/2/6/132696351/pexibu_wuwam_jasabelazose_kotelanojawa.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/48054684450.pdf
    • https://cdn.shopify.com/s/files/1/0434/9480/1568/files/84275799976.pdf
    • https://cdn.shopify.com/s/files/1/0431/0728/7189/files/36292253203.pdf
    • https://cdn.shopify.com/s/files/1/0435/8150/5695/files/40885764325.pdf
    • https://cdn.shopify.com/s/files/1/0434/5259/6374/files/pagepijezuxo.pdf
    • https://cdn.shopify.com/s/files/1/0444/7302/4679/files/bruhn_book.pdf
    • https://cdn.shopify.com/s/files/1/0431/8747/0494/files/federal_ammo_rebate_status.pdf
    • https://cdn.shopify.com/s/files/1/0434/5865/8456/files/pabetipivoxopisebazafaj.pdf
    • https://cdn.shopify.com/s/files/1/0437/7139/6257/files/vazodezonexovexid.pdf
    • https://cdn.shopify.com/s/files/1/0430/8058/1274/files/59667539458.pdf
    • https://cdn.shopify.com/s/files/1/0427/4978/8327/files/14185624845.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nadogenomaxijedunebenez.pdf
    • https://cdn.shopify.com/s/files/1/0431/7147/9709/files/21095121453.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006f8a.bin
e5d64031708bc15ffe59627adcac78facb410aaad00f16e2964beb19d20be39d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F8A 4864 bytes
font_01_sfnt_off00008002.bin
bb0011f44a5402ee5bc87b38fdc74fe7c206c04cff1a6c37fe44678224476033		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8002 11416 bytes
font_02_sfnt_off0000a485.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA485 4324 bytes

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