Malicious PDF — malware analysis report

Static analysis result for SHA-256 986b627556114e45…

MALICIOUS

PDF

69.4 KB Created: 2020-08-09 10:40:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 076c83900fbb909e3ccd6f442c471b89 SHA-1: 29eae2a4fbc978d80f962127d98036e66a9453e8 SHA-256: 986b627556114e457e7225c7d590f5ddd535b7fb1aa5faffd7de71f8665c6c07
150 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 presented within the document body, disguised as a link to an 'Apache tomcat server administration guide pdf'. The PDF also exhibits characteristics of a link farm, with numerous external links, many of which are benign Shopify URLs, but the primary malicious redirector is the key indicator. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=apache+tomcat+server+administration+guide+pdf
    • http://files.ashaimanveal.com/uploads/1/3/0/7/130739348/dosimekinevepavupag.pdf
    • http://files.seviercountysped.com/uploads/1/3/1/4/131437139/7470812.pdf
    • http://files.dallasmoderne.com/uploads/1/3/1/6/131606360/reputiranisemapo.pdf
    • https://cdn.shopify.com/s/files/1/0439/2642/1672/files/2004_acura_mdx_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/6650/7942/files/7335855811.pdf
    • https://cdn.shopify.com/s/files/1/0436/6961/8841/files/dojigilokavijenawakege.pdf
    • https://cdn.shopify.com/s/files/1/0432/8207/1716/files/1972_gmc_jimmy.pdf
    • https://cdn.shopify.com/s/files/1/0428/9223/0823/files/fumava.pdf
    • https://cdn.shopify.com/s/files/1/0437/7971/9330/files/tornado_mod_1._7._10.pdf
    • https://cdn.shopify.com/s/files/1/0435/4896/7061/files/90477500609.pdf
    • https://cdn.shopify.com/s/files/1/0431/4457/7178/files/sasivupivimotufobuxevu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/56802730071.pdf
    • https://cdn.shopify.com/s/files/1/0427/5575/2103/files/animal_crossing_wild_world_face_guide.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/31968244380.pdf
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/41985251105.pdf
    • https://cdn.shopify.com/s/files/1/0432/5212/1762/files/kali_source_list.pdf
    • https://cdn.shopify.com/s/files/1/0437/6713/6408/files/gopegejazenumuzimipivavu.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_off0000c56f.bin
d34951a9b07ddf90770f2d1034cf5208e66830e3249e0fe8b40f8fb5c575841f
pdf-font-stream PDF embedded font (sfnt) at offset 0xC56F 5584 bytes
font_01_sfnt_off0000d84c.bin
aed1c2244bf8b1a619807e54e5c1640c603c5cf7c040045559c983d499349a54
pdf-font-stream PDF embedded font (sfnt) at offset 0xD84C 14628 bytes