Malicious PDF — malware analysis report

Static analysis result for SHA-256 d172b1d1a2db8605…

MALICIOUS

PDF

42.0 KB Created: 2020-08-12 07:21:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 87719c350fa21dec3b7161a243814b74 SHA-1: ffd38087423ffde77d2eb8641fbf8205a242469d SHA-256: d172b1d1a2db8605f3242d0f14ed5b3d16838aa93afc3e3c8f1c651da766f4b0
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=bhutan+happiness+index+pdf', which is flagged as malicious. This indicates the PDF's primary function is to redirect users to malicious infrastructure, likely for phishing or malware distribution.

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=bhutan+happiness+index+pdf
    • http://ritopa.alacc-capitalconnection.com/uploads/1/3/1/3/131383483/guvoxofawuluwanaged.pdf
    • http://wewapofij.kennardin.com/uploads/1/3/0/8/130873826/797441.pdf
    • http://medabos.tualatinyouthtrack.com/uploads/1/3/1/4/131483144/rupunafol.pdf
    • http://pivev.davidfugatecreations.com/uploads/1/3/1/3/131383483/1050702.pdf
    • https://cdn.shopify.com/s/files/1/0431/7449/4369/files/academic_writing_task_1_vocabulary.pdf
    • https://cdn.shopify.com/s/files/1/0427/9923/5228/files/15218042492.pdf
    • https://cdn.shopify.com/s/files/1/0428/9832/5663/files/nixogezuso.pdf
    • https://cdn.shopify.com/s/files/1/0449/1057/5771/files/islamic_names_for_baby_girl_with_urdu_meanings.pdf
    • https://cdn.shopify.com/s/files/1/0432/9711/2219/files/agatha_christie_the_a._b._c._murders.pdf
    • https://cdn.shopify.com/s/files/1/0431/5765/1613/files/wukepufuneritodojipikenap.pdf
    • https://cdn.shopify.com/s/files/1/0429/5314/6517/files/radigatipinemebuzuf.pdf
    • https://cdn.shopify.com/s/files/1/0431/8153/9488/files/watiledaj.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/35117459625.pdf
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/sigizimozibamagazilezut.pdf
    • https://cdn.shopify.com/s/files/1/0435/0250/2054/files/paladin_5e_oath_of_vengeance.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_off00006721.bin
0f442bf6455d2d9d6022e4c978ab0021b81852588353ce1cffab1e4c43518234		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6721 5116 bytes
font_01_sfnt_off0000788c.bin
ddb76b608a674bee874b89d1c16b4a9cf84087fb54fb0f7fb5cbf0b7d9b08dda		 pdf-font-stream PDF embedded font (sfnt) at offset 0x788C 10292 bytes

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