Malicious PDF — malware analysis report

Static analysis result for SHA-256 b07f2e95dc2c4f8a…

MALICIOUS

PDF

45.1 KB Created: 2020-08-10 21:44:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f0a08d677f55741c2829b6053d8afd52 SHA-1: 3d4c0032a1da70980419a099fa25bbc1bf83c426 SHA-256: b07f2e95dc2c4f8add6156d9f50a28f18d33b2b142b4345038b30b8b0dfbd920
152 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and contains numerous embedded links. One critical heuristic indicates the presence of a malicious redirector link pointing to 'ttraff.com'. Another critical heuristic identifies a PDF link farm, with many links pointing to Shopify domains, suggesting an attempt to manipulate SEO or distribute further malicious content. No scripts were extracted from this sample.

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=jean+anouilh+medea+pdf
    • http://files.lindentreeherbals.com/uploads/1/3/0/7/130775221/jazexuvuwigo.pdf
    • http://files.hellokaelo.com/uploads/1/3/2/8/132815343/jiduvowexuvugi-latuwefopex-todojasoxasa-jujid.pdf
    • http://files.creativecounselingsrq.org/uploads/1/3/2/7/132710787/5366484.pdf
    • http://files.northcountytrees.org/uploads/1/3/2/6/132681690/6945000.pdf
    • http://files.africanqueensdance.com/uploads/1/3/1/3/131380263/juxifuzesavebokizojo.pdf
    • https://cdn.shopify.com/s/files/1/0435/3399/2085/files/vukodefoserefe.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/58863311498.pdf
    • https://cdn.shopify.com/s/files/1/0432/2865/9869/files/rapipulubakadudawebira.pdf
    • https://cdn.shopify.com/s/files/1/0438/4371/5229/files/zabemek.pdf
    • https://cdn.shopify.com/s/files/1/0439/6960/9886/files/48612671071.pdf
    • https://cdn.shopify.com/s/files/1/0432/8760/9497/files/noxuvonikunasexoxidej.pdf
    • https://cdn.shopify.com/s/files/1/0433/4115/2406/files/65646655167.pdf
    • https://cdn.shopify.com/s/files/1/0437/6143/4773/files/dudadasukipejumisinika.pdf
    • https://cdn.shopify.com/s/files/1/0433/7483/7925/files/wabob.pdf
    • https://cdn.shopify.com/s/files/1/0433/3626/9983/files/89911961135.pdf
    • https://cdn.shopify.com/s/files/1/0435/3612/2008/files/nadekufumawidemasab.pdf
    • https://cdn.shopify.com/s/files/1/0431/3320/6690/files/pilidari.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_off000074a3.bin
fe9b6e9982207535e4b87d3187a716f51532d7604a819fdf040aad28366a0f02
pdf-font-stream PDF embedded font (sfnt) at offset 0x74A3 4996 bytes
font_01_sfnt_off0000857f.bin
90894468473df4adf5b5a944a1eae0649f5193045d2c9598bcd6bd7d1ebdd3eb
pdf-font-stream PDF embedded font (sfnt) at offset 0x857F 9932 bytes