Malicious PDF — malware analysis report

Static analysis result for SHA-256 211f0a2a1c1679d3…

MALICIOUS

PDF

54.4 KB Created: 2020-07-25 18:19:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8bd8f5ccc05b9ffaf18279d80aeba6bb SHA-1: ff002b59debaabad5fa9b0e7fba382a6ac38d41e SHA-256: 211f0a2a1c1679d3da2e839cc26e5228c030a9dfcda524df48df4e9e1f99988a
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, directing users to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, including one pointing to a Shopify domain. The document body, though heavily obfuscated, appears to be related to a calibration manual, suggesting a lure to disguise the malicious intent.

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.com/wb?keyword=fluke%20754%20calibration%20manual
    • http://files.aurum-et-argentum.net/uploads/1/3/1/6/131636946/nimilufezavugo_vafude_rexesogufogovi.pdf
    • http://files.encounterweightloss.com/uploads/1/3/0/7/130776828/8d2d30cd.pdf
    • http://files.youvegotmaille.net/uploads/1/3/2/7/132740633/redevu_fijotiregu_fitomow.pdf
    • http://files.bluenosewoodworks.com/uploads/1/3/2/8/132815961/somokirolurujewikusi.pdf
    • http://files.clothdiaperdepotusa.com/uploads/1/3/0/9/130968934/tibapizazuja-goges-livasef.pdf
    • http://files.youvegotmaille
    • https://cdn.shopify.com/s/files/1/0430/5109/0077/files/xolomazisopewegageluga.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/30553092986.pdf
    • https://cdn.shopify.com/s/files/1/0427/9474/6023/files/pimeteweramojikije.pdf
    • https://cdn.shopify.com/s/files/1/0437/6294/2113/files/lotifejajepiluzibuzaw.pdf
    • https://cdn.shopify.com/s/files/1/0431/2521/1298/files/gobakupuzifomiwop.pdf
    • https://cdn.shopify.com/s/files/1/0433/3866/2053/files/zimapipodogibilosuvuwuter.pdf
    • https://cdn.shopify.com/s/files/1/0435/8812/4829/files/fodenepise.pdf
    • https://cdn.shopify.com/s/files/1/0432/9183/6566/files/bokoweninuwidadefezeruzim.pdf
    • https://cdn.shopify.com/s/files/1/0433/7526/3909/files/wigibudija.pdf
    • https://cdn.shopify.com/s/files/1/0435/6633/4111/files/98923097995.pdf
    • https://cdn.shopify.com/s/files/1/0431/8684/7905/files/30824329851.pdf
    • https://cdn.shopify.com/s/files/1/0430/0220/0223/files/20024361493.pdf
    • https://cdn.shopify.com/s/files/1/0432/6116/5723/files/fatinonefetebekomazeka.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_off00008ec5.bin
90cc34806db265ba619328b117fb733599372fe79665cc6c5039961824888213
pdf-font-stream PDF embedded font (sfnt) at offset 0x8EC5 5100 bytes
font_01_sfnt_off0000a010.bin
6d8246693725346ab33e82ab475cfae6605cabe41767e1c5af00cca3d7d1c127
pdf-font-stream PDF embedded font (sfnt) at offset 0xA010 14012 bytes