Malicious PDF — malware analysis report

Static analysis result for SHA-256 b956433cffc4e48a…

MALICIOUS

PDF

82.4 KB Created: 2020-08-05 15:13:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2cee0f766b1cd7e84da24da885d56074 SHA-1: 58f5e8d037a3a121f1637e4a2b0cef5ab68ab1bb SHA-256: b956433cffc4e48aadaa879b24008cb1afac3d96be2f28a4cb4779f745060f75
152 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. This URL is embedded within the document body, suggesting an attempt to lure the user to a malicious site. The PDF also contains a large number of external links, flagged as a link farm, further indicating malicious intent. The ML classifier strongly supports the malicious verdict.

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.ru/pify?keyword=dictionnaire+informatique+francais+arabe+pdf
    • http://files.opunakesurflifesaving.com/uploads/1/3/0/8/130814513/gezitowejukejekojuko.pdf
    • http://files.mountzionpbchurch.org/uploads/1/3/2/6/132681602/7386981.pdf
    • http://files.pylkkanenconsulting.com/uploads/1/3/1/4/131412558/55176cfde938bc.pdf
    • https://cdn.shopify.com/s/files/1/0428/0621/4819/files/sijixamogezunoxakak.pdf
    • https://cdn.shopify.com/s/files/1/0433/0268/2789/files/jikupinerigim.pdf
    • https://cdn.shopify.com/s/files/1/0433/5511/1589/files/10970530957.pdf
    • https://cdn.shopify.com/s/files/1/0434/0629/5196/files/george_foreman_rotisserie_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/84407481133.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/24375498268.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/55864873889.pdf
    • https://cdn.shopify.com/s/files/1/0429/6572/9429/files/73130288260.pdf
    • https://cdn.shopify.com/s/files/1/0433/2067/2409/files/bapabuvalutalarududalewe.pdf
    • https://cdn.shopify.com/s/files/1/0432/8544/6822/files/adrenalina_que_es.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51025654711.pdf
    • https://cdn.shopify.com/s/files/1/0431/9218/9089/files/traduzione_amleto.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off0000fbfe.bin
8f4664527c049f84a5229dfd5816e81b6aa7d95db4b0e49445a012c3eb7b16d7		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xFBFE 27240 bytes
font_00_sfnt_off0000c0eb.bin
a13163719ae0d3d9fca01d51d4a82fa29c31c4f4de9fbaa03201cf1067c85772		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC0EB 5416 bytes
font_01_sfnt_off0000d330.bin
af914c5ec703aeb2e7f05e4308705295f713e023545e6b2d88bce424abf857fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD330 13052 bytes
font_03_sfnt_off00012bb1.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12BB1 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.