Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd950a416c75e4c2…

MALICIOUS

PDF

41.0 KB Created: 2020-08-23 19:14:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 212bc098658f8a6a911c820dfb29c472 SHA-1: 1833b896a11d8d2d8061f1f06d8890539c8aa673 SHA-256: dd950a416c75e4c245ff110ab7fa7b4819e69d28bb929df2f26cbf4c11ccb0c1
154 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text related to 'funeral service program template word' and the malicious URL, suggesting a social engineering lure. The presence of a large number of external PDF links, many hosted on Shopify, further indicates a link farm designed to attract traffic, with the primary malicious link being the redirector.

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=funeral+service+program+template+word
    • http://files.grandmaceilshouse.com/uploads/1/3/1/4/131408529/92347f03614c5.pdf
    • https://cdn.shopify.com/s/files/1/0429/7850/8953/files/kananepekotujapudaf.pdf
    • https://cdn.shopify.com/s/files/1/0428/5802/1027/files/mafumukeg.pdf
    • https://cdn.shopify.com/s/files/1/0427/5725/9420/files/bounce_dryer_sheets_for_sensitive_skin.pdf
    • https://cdn.shopify.com/s/files/1/0428/5654/6467/files/fokudavitulotuwixeki.pdf
    • https://cdn.shopify.com/s/files/1/0435/2517/7512/files/vozid.pdf
    • https://cdn.shopify.com/s/files/1/0431/9127/1586/files/fundamental_accounting_principles_20th_edition_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/0049/5260/files/lisekufewijuwofajir.pdf
    • https://cdn.shopify.com/s/files/1/0431/4362/6912/files/4826537789.pdf
    • https://cdn.shopify.com/s/files/1/0454/5331/2150/files/63185612176.pdf
    • https://cdn.shopify.com/s/files/1/0431/4375/7992/files/bopumitufavevob.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_off000061cb.bin
9beb1be15e24e4229c474e0821ee967791af5d5b0b8ba296edf5bc3175b85f80
pdf-font-stream PDF embedded font (sfnt) at offset 0x61CB 5500 bytes
font_01_sfnt_off00007476.bin
c94607734037dac853b17d73e5b3ee9f8d169eb01346174be87e7ab28d131e91
pdf-font-stream PDF embedded font (sfnt) at offset 0x7476 10256 bytes