Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d454d94a30c1fda…

MALICIOUS

PDF

49.1 KB Created: 2020-08-21 15:19:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 859fd1b912d632712de4631b48cac278 SHA-1: 6b65597b77370c414b11dc8236f6c665413c0246 SHA-256: 9d454d94a30c1fdaecad384ebcb4c734c59203d46f2a5532b2bfbfd76e5afd38
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=alexa+app+android+uk'. The document body, though heavily obfuscated, also contains this URL, suggesting a lure to potentially malicious content. The presence of numerous external links, including the identified malicious redirector, indicates an attempt to drive traffic to attacker-controlled infrastructure.

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=alexa+app+android+uk
    • http://files.becomingbravearea.com/uploads/1/3/1/3/131379591/vufuluve_rolagomo_vofufudili_bisug.pdf
    • http://files.katieandnatey.com/uploads/1/3/0/7/130740325/juzigakegub-kidowelogixi.pdf
    • http://moros.fallout76volunteersguild.com/uploads/1/3/0/7/130738850/rorepixu.pdf
    • http://files.engageinfaith.org/uploads/1/3/1/4/131437117/dipenojikaros.pdf
    • http://files.pilatesante.com/uploads/1/3/1/3/131383942/konokuvivomekasod.pdf
    • https://cdn.shopify.com/s/files/1/0449/3528/2856/files/38427639729.pdf
    • https://cdn.shopify.com/s/files/1/0430/3542/6970/files/95576079930.pdf
    • https://cdn.shopify.com/s/files/1/0432/3888/3495/files/kanobezazunojonul.pdf
    • https://cdn.shopify.com/s/files/1/0433/9286/0327/files/lupoleb.pdf
    • https://cdn.shopify.com/s/files/1/0433/9941/3925/files/14975404312.pdf
    • https://cdn.shopify.com/s/files/1/0437/3279/5541/files/94037069730.pdf
    • https://cdn.shopify.com/s/files/1/0431/4293/8784/files/quiz_exponent_properties_answers.pdf
    • https://cdn.shopify.com/s/files/1/0435/3196/0469/files/28873909657.pdf
    • https://cdn.shopify.com/s/files/1/0431/0876/1766/files/distraint_deluxe_edition_guide.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_off00008299.bin
401aaec1c94a240383bc57c496a9380031245159202317165060e37f207a438c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8299 4896 bytes
font_01_sfnt_off00009347.bin
bd46aaf3a78de78b16830bc44b161604d5e4b5f485d8993655ede1228b6039c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9347 10684 bytes

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