Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d69767fb13dbc87…

MALICIOUS

PDF

42.1 KB Created: 2020-08-12 07:08:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 42e52256d672c811985786041a935d02 SHA-1: 0c9261a5e3c219dc60e9193a9caf540fe24e3938 SHA-256: 2d69767fb13dbc87b3c98bac842d4d20a62f0fe8d2a4243af7b31b355eb5db2a
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, identified as a link farm, designed to redirect users to malicious infrastructure. One of the primary links points to a known malicious redirector, ttraff.ru. The document body, though heavily obfuscated, contains references to the target URL and other PDF links, suggesting a social engineering lure to drive traffic to malicious sites.

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=bari+italy+map+pdf
    • http://gopizul.tremontsports.com/uploads/1/3/0/7/130775403/ketiso-lejinibaziw-mimunokewuxoni.pdf
    • http://kowakow.goevangelismos.com/uploads/1/3/0/7/130776891/5c3a230979fb6.pdf
    • http://files.rosevilleacupunctureandmassage.com/uploads/1/3/1/3/131380175/buwedimi.pdf
    • https://cdn.shopify.com/s/files/1/0431/3917/0466/files/65257208892.pdf
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/83684860086.pdf
    • https://cdn.shopify.com/s/files/1/0437/3594/1274/files/1532953820.pdf
    • https://cdn.shopify.com/s/files/1/0433/8191/5802/files/informantes_claves_segun_autores.pdf
    • https://cdn.shopify.com/s/files/1/0431/8373/4943/files/88739674684.pdf
    • https://cdn.shopify.com/s/files/1/0428/6542/6598/files/data_structures_and_algorithms_with_python_kent_d._lee.pdf
    • https://cdn.shopify.com/s/files/1/0438/4423/9510/files/4976603100.pdf
    • https://cdn.shopify.com/s/files/1/0433/0491/1006/files/blue_eyed_cass.pdf
    • https://cdn.shopify.com/s/files/1/0431/9048/5150/files/cardiopata_de_takotsubo.pdf
    • https://cdn.shopify.com/s/files/1/0435/8917/3411/files/arteria_carotida_anatomia.pdf
    • https://cdn.shopify.com/s/files/1/0433/3754/7929/files/data_mining_and_knowledge_discovery.pdf
    • https://cdn.shopify.com/s/files/1/0431/9376/1941/files/jemeguvivebokozu.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_off00006825.bin
ec9cb777c3d507aa691b6237ece67ef4e44c20108ca1cc20384c47538455a475
pdf-font-stream PDF embedded font (sfnt) at offset 0x6825 5160 bytes
font_01_sfnt_off000079a5.bin
e81cb8b7a5037de8ee2b64d1ed4832dcd0afdfbdd3f519f0113821daf33f6190
pdf-font-stream PDF embedded font (sfnt) at offset 0x79A5 9964 bytes