Malicious PDF — malware analysis report

Static analysis result for SHA-256 97a1d7cb666452b3…

MALICIOUS

PDF

44.6 KB Created: 2020-08-12 23:50:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 720e7e61fde315aa2f92e12bd44436c7 SHA-1: 032597dced720cd1d306c7b323da673a8d14fe01 SHA-256: 97a1d7cb666452b381f5a0ab5252ed8b12fa2a50110811d8a828e6b0d196f39a
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic firing indicates that the PDF links to known malicious redirector infrastructure via the URL https://ttraff.com/pify?keyword=effect+of+substituents+on+basicity+of+aromatic+amines+pdf. This suggests the document is designed to redirect users to malicious sites under the guise of providing information.

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/pify?keyword=effect+of+substituents+on+basicity+of+aromatic+amines+pdf
    • http://files.litterpreventionprogram.com/uploads/1/3/0/7/130776206/3906a682c7.pdf
    • http://files.joshforil91.com/uploads/1/3/1/3/131378868/6121353.pdf
    • http://files.sexualharassmentwebinars.com/uploads/1/3/0/8/130874284/90ee6e.pdf
    • http://files.monsieurcreations.com/uploads/1/3/0/7/130739626/1d2e41fcfde.pdf
    • https://cdn.shopify.com/s/files/1/0428/6749/0975/files/34161109526.pdf
    • https://cdn.shopify.com/s/files/1/0454/0868/2152/files/nufufasosoziliw.pdf
    • https://cdn.shopify.com/s/files/1/0435/3989/0327/files/vodapazufokukovuruxeru.pdf
    • https://cdn.shopify.com/s/files/1/0432/4232/4125/files/flight_attendant_job_interview_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0437/4672/1946/files/nanny_resume_sample.pdf
    • https://cdn.shopify.com/s/files/1/0433/9495/7475/files/zurewozowiguzatuv.pdf
    • https://cdn.shopify.com/s/files/1/0434/6635/8934/files/organic_chemistry_acs_exam.pdf
    • https://cdn.shopify.com/s/files/1/0437/2522/6133/files/wujizinisifol.pdf
    • https://cdn.shopify.com/s/files/1/0428/7106/2684/files/xuxopularale.pdf
    • https://cdn.shopify.com/s/files/1/0434/4738/6264/files/dekagiwebasigutitida.pdf
    • https://cdn.shopify.com/s/files/1/0427/6014/3014/files/71596842039.pdf
    • https://cdn.shopify.com/s/files/1/0435/7645/9422/files/fowifogopugekegomi.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_off00006eff.bin
3f9f39ce61eb902940659b0a962dda6c33b690a953c00fc4f4b2ac656deedb6c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EFF 5468 bytes
font_01_sfnt_off00008183.bin
8d1af9e21e2a142a65c6de8a5eb6443ebd3f2a4caff0976785ae45146f9e0ed9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8183 10328 bytes

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