Malicious PDF — malware analysis report

Static analysis result for SHA-256 83e09643c277050f…

MALICIOUS

PDF

42.8 KB Created: 2020-08-18 17:51:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6a6434aac3bb3d0456ea2a851ff6ea2b SHA-1: 4580b60587a100b378fce7fcafb5c4b2a4a20ac9 SHA-256: 83e09643c277050fa9dd35ca2d335a90fe679629a391a570f0e82ce97f634521
120 Risk Score

Malware Insights

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

The PDF contains a link farm and a specific redirector URL that is flagged as malicious. The document body, though heavily obfuscated, contains text related to a 'Chamberlain garage door opener manual' and the malicious redirector URL. This suggests a social engineering lure to trick users into visiting the malicious site, likely for further exploitation or credential harvesting.

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=chamberlain+garage+door+opener+41ac050+1m+manual
    • http://kavezodek.ohwhataluckyfish.com/uploads/1/3/2/6/132681352/7921448.pdf
    • http://files.artlynchactingcoach.com/uploads/1/3/1/4/131453133/8602126.pdf
    • http://files.grisuteramo.com/uploads/1/3/1/8/131856392/7ef637a07b2c5.pdf
    • http://files.artofarchitecting.com/uploads/1/3/2/3/132303269/jomije.pdf
    • http://files.ravenartcenter.com/uploads/1/3/2/7/132740499/e7f022e1.pdf
    • https://cdn.shopify.com/s/files/1/0448/2249/5389/files/sap_fico_consultant_interview_questions_answers.pdf
    • https://cdn.shopify.com/s/files/1/0429/2562/1404/files/don_t_you_evah.pdf
    • https://cdn.shopify.com/s/files/1/0431/4087/4408/files/rigax.pdf
    • https://cdn.shopify.com/s/files/1/0437/3122/2677/files/jikapevas.pdf
    • https://cdn.shopify.com/s/files/1/0434/4204/5090/files/jedikaxati.pdf
    • https://cdn.shopify.com/s/files/1/0429/3751/6191/files/56281745076.pdf
    • https://cdn.shopify.com/s/files/1/0438/4977/7312/files/8323658404.pdf
    • https://cdn.shopify.com/s/files/1/0431/6856/3355/files/kezelejiworupovomokezo.pdf
    • https://cdn.shopify.com/s/files/1/0440/6879/8614/files/saganedimubexukoz.pdf
    • https://cdn.shopify.com/s/files/1/0431/6335/3244/files/aguner_poroshmoni.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_off000067af.bin
17a842550deea220e02a4d705f15ca420522833c1c7a3cf6f734177b30f4bc15		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67AF 5760 bytes
font_01_sfnt_off00007b2f.bin
d55dfde6ec9f4b5cdd29e20686d437c5d9812595d2c1c39af8d4d21c1edca9c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B2F 10232 bytes

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