Malicious PDF — malware analysis report

Static analysis result for SHA-256 426db61f998d6b29…

MALICIOUS

PDF

35.9 KB Created: 2020-08-17 01:45:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 889a89bde05f82a18c01d899940cec34 SHA-1: 573f3352d13958a374465adc79112eecf58b200d SHA-256: 426db61f998d6b29089221477ce7372f9ec9cbff94d191c1e8a522b75eb16fe5
140 Risk Score

Malware Insights

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

The PDF file is identified as malicious due to its structure, which includes an image-only lure and a click-outward action. It contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, including one hosted on Shopify. The document body, though partially corrupted, contains the target URL, reinforcing the phishing lure.

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.
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 2 text block(s), carries a click-outward action, and is only 35 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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=government+accounting+millan+solution+manual+chapter+6
    • http://jajinegaj.mendedhearts117.org/uploads/1/3/2/8/132814930/3699741.pdf
    • http://files.urbanwordcollective.co.uk/uploads/1/3/1/8/131856162/bitaz_konixawusojap.pdf
    • http://files.staceykennellynester.com/uploads/1/3/0/8/130814466/sodekabakixise.pdf
    • http://files.aimbehavioralhealth.org/uploads/1/3/2/6/132695932/534df.pdf
    • http://files.aspectsmediaimaging.com/uploads/1/3/2/6/132683014/236d6312ef701b.pdf
    • https://cdn.shopi
    • https://cdn.shopify.com/s/files/1/0435/4893/4295/files/finer.pdf
    • https://cdn.shopify.com/s/files/1/0428/0002/1667/files/65111998518.pdf
    • https://cdn.shopify.com/s/files/1/0437/6789/0069/files/the_alphabet_song_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0433/3748/2405/files/25400879723.pdf
    • https://cdn.shopify.com/s/files/1/0427/7954/1671/files/44357067787.pdf
    • https://cdn.shopify.com/s/files/1/0449/2935/1835/files/after_effects_expressions_marcus_geduld.pdf
    • https://cdn.shopify.com/s/files/1/0427/6633/6166/files/64841980499.pdf
    • https://cdn.shopify.com/s/files/1/0430/6527/8625/files/xatokivupagerufirufifuv.pdf
    • https://cdn.shopify.com/s/files/1/0431/7849/2062/files/5584353228.pdf
    • https://cdn.shopify.com/s/files/1/0434/5685/6230/files/binitewutowimarejivubibup.pdf
    • https://cdn.shopify.com/s/files/1/0437/8856/6677/files/truss_analysis_method_of_joints_examples.pdf
    • https://cdn.shopify.com/s/files/1/0433/6844/8151/files/data_analyst_interview_questions_and_answers_for_freshers.pdf
    • https://cdn.shopify.com/s/files/1/0430/9906/2421/files/azotobacter_characteristics.pdf
    • https://cdn.shopify.com/s/files/1/0431/7547/7416/files/nekokuwu.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_off0000461c.bin
95ce9899416e482ee4a71412bdf16cb68d702e23d3abc597737fc0c49b8046e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x461C 5476 bytes
font_01_sfnt_off00005895.bin
0a0a48005db1966beee1e1d670385c8ca82a0d99f1a2e3d391f324322e12de83		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5895 8020 bytes
font_02_sfnt_off000073fb.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73FB 4324 bytes

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