Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac38bc8b76f9a54d…

MALICIOUS

PDF

41.5 KB Created: 2020-08-20 20:06:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9244119f307cf70f86bbfaac504e0573 SHA-1: ee0f8d2bde4124fb93ee40fd66509616a041ea0b SHA-256: ac38bc8b76f9a54d837e04e12f3804ceca1bd452232bc6fd76a15e0ee7cbf1d6
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a lure related to a 'Huawei mate 10 android 9 review' but embeds numerous links, including a critical redirector link to 'ttraff.cc'. This indicates a link farm or redirection attack designed to lead users to malicious content. The PDF structure and embedded links strongly suggest a social engineering tactic to compromise users.

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.cc/pify?keyword=huawei+mate+10+android+9+review
    • http://files.newenglanddentalassociates.com/uploads/1/3/1/4/131438177/xudojemabanado-bowesopis-wagav.pdf
    • http://files.madmarkfarms.com/uploads/1/3/1/1/131164198/5289862.pdf
    • https://cdn.shopify.com/s/files/1/0428/7922/1919/files/14962332751.pdf
    • https://cdn.shopify.com/s/files/1/0438/8130/0123/files/jiwamedemekafuxawejukoxa.pdf
    • https://cdn.shopify.com/s/files/1/0433/2408/0282/files/pixuvawenibufivawapibug.pdf
    • https://cdn.shopify.com/s/files/1/0437/0500/8293/files/barriers_to_effective_communication_in_an_organisation.pdf
    • https://cdn.shopify.com/s/files/1/0430/4545/3985/files/sperm_analysis_report.pdf
    • https://cdn.shopify.com/s/files/1/0436/7243/6889/files/f-_secure_freedome_vpn_apk_cracked_android.pdf
    • https://cdn.shopify.com/s/files/1/0438/3598/1974/files/jigete.pdf
    • https://cdn.shopify.com/s/files/1/0433/5733/9800/files/robenu.pdf
    • https://cdn.shopify.com/s/files/1/0435/5699/5233/files/diary_entry_questions_and_answers.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ba7.bin
7dfaeb8620fd152eb72863ff3306d29cd8ffae5afd545f79aa655dc0d82ab226		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BA7 5224 bytes
font_01_sfnt_off00006d63.bin
cf50d13c5c21d2e34fba0d9dd21119d4839fc35fdaebfe62cbacf51850cc328d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D63 1936 bytes
font_02_sfnt_off000076a2.bin
a08dc6db68144e8344ae4a76f87fce3f1c3118dd20c1297c03122062a5457c20		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76A2 10068 bytes

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