Malicious PDF — malware analysis report

Static analysis result for SHA-256 34c4a2f17901f181…

MALICIOUS

PDF

33.5 KB Created: 2020-08-06 22:43:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 946bed0c23419cbf67a295108bc832fa SHA-1: 82986adc20c9214ae49bcfdb0950918e19c17e42 SHA-256: 34c4a2f17901f181953c4c3fbf599f1024f6f68f5d7d0f91918b75872286eb03
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external PDFs, suggesting a link farm SEO tactic. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely intended to lead the user to malicious content. The document body, though heavily obfuscated, contains the same URL, reinforcing its role as a lure. No scripts were extracted from this sample.

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=afsoomaali+fasalka+1aad+pdf
    • http://files.carissamariee.com/uploads/1/3/1/4/131453193/5307999.pdf
    • http://files.cbfncyoungadults.org/uploads/1/3/0/8/130813888/xirerutotiwizun_lewaz.pdf
    • http://files.theweeklybeaver.com/uploads/1/3/0/9/130970008/3594690.pdf
    • http://files.youngmarys.com/uploads/1/3/1/4/131453494/loxagozugifadur.pdf
    • http://files.medicalwhitepapers.com/uploads/1/3/0/7/130776416/fowuwipiz.pdf
    • https://cdn.shopify.com/s/files/1/0432/0044/6626/files/zuzejevurikatojujof.pdf
    • https://cdn.shopify.com/s/files/1/0432/1044/0862/files/zuwofer.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0234/files/godsmack_the_oracle.pdf
    • https://cdn.shopify.com/s/files/1/0430/7252/0352/files/british_english_grammar_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/4551/9513/files/al_ghazali_english.pdf
    • https://cdn.shopify.com/s/files/1/0434/0963/7533/files/sibuzufow.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/99640144283.pdf
    • https://cdn.shopify.com/s/files/1/0432/8993/6025/files/addition_and_subtraction_word_problems_3rd_grade.pdf
    • https://cdn.shopify.com/s/files/1/0431/2920/8983/files/bekibumijidesubidivugol.pdf
    • https://cdn.shopify.com/s/files/1/0437/3331/9831/files/1762627715.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lujodegiduwidixerilaji.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_off000045eb.bin
4e816663403b6a35ed5ea205c9ccb0486abe7297d82b17bcf7398d881e564e90		 pdf-font-stream PDF embedded font (sfnt) at offset 0x45EB 5196 bytes
font_01_sfnt_off00005790.bin
c9e0cef9c9782794bced39e1887b1dc9830781fd49de339a5d186bb4c2fd0153		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5790 9832 bytes

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