Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2bc301f0ca6bf90…

MALICIOUS

PDF

38.6 KB Created: 2020-08-14 23:55:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 68c02afc0171f7d5957b4edf541548c6 SHA-1: 0f2030f34ff32f981f62acd587102aa4beee888a SHA-256: d2bc301f0ca6bf9054aa374848865d26ed6795e4e4cf78ce55cf5faa66d6f99c
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector. The document body, though partially corrupted, contains text related to 'Anthem bcbs prior authorization fax form' and the malicious URL, suggesting a phishing lure. The presence of a link farm further indicates malicious intent to distribute content or redirect users to malicious sites.

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=anthem+bcbs+prior+authorization+fax+form
    • http://files.astoriaoms.com/uploads/1/3/1/6/131606393/liwokidol.pdf
    • http://files.shadysideofthetracks.com/uploads/1/3/1/4/131406762/9744250.pdf
    • http://files.plantandsoiltreatment.com/uploads/1/3/0/8/130813516/6061385.pdf
    • https://cdn.shopify.com/s/files/1/0433/6661/3141/files/72584825371.pdf
    • https://cdn.shopify.com/s/files/1/0433/6350/0197/files/oceanography_garrison.pdf
    • https://cdn.shopify.com/s/files/1/0431/1810/0637/files/search_pdf_file_on_ipad.pdf
    • https://cdn.shopify.com/s/files/1/0431/8865/0142/files/12427946418.pdf
    • https://cdn.shopify.com/s/files/1/0436/3668/7008/files/classroom_action_research_sample.pdf
    • https://cdn.shopify.com/s/files/1/0430/7946/7162/files/rdr2_disarm_3_enemies.pdf
    • https://cdn.shopify.com/s/files/1/0431/1325/0972/files/39327763699.pdf
    • https://cdn.shopify.com/s/files/1/0434/0305/1171/files/66833095168.pdf
    • https://cdn.shopify.com/s/files/1/0430/0010/3073/files/sujepujoxozuvatoxol.pdf
    • https://cdn.shopify.com/s/files/1/0428/5625/1555/files/carbohydrate_metabolism_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0433/7418/2563/files/lilabonimezomosawu.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_off0000593d.bin
03fbc3bd0d7005571f97cdd262a5b7c949dbdd77e33ea71674519f3f1a015c34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x593D 5468 bytes
font_01_sfnt_off00006bab.bin
78f70be2813b95d73ed8aac90d7b8175d22a080619325faed531c72fe93dcf8f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BAB 9904 bytes

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