Malicious PDF — malware analysis report

Static analysis result for SHA-256 7aa48ff053b6022e…

MALICIOUS

PDF

40.6 KB Created: 2020-09-21 17:07:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 74ff64aa7abdc8d586b0e7c90d1e6d72 SHA-1: 6d324d5a90c74c13bdd299b259e618747c040ad7 SHA-256: 7aa48ff053b6022eb0d2a45fb230cc98143fdca5e36a21f16d4190901b1abc4c
120 Risk Score

Malware Insights

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

The PDF document contains a link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body and embedded URLs suggest a lure to download an Android application, which is a common tactic for distributing malware. The PDF_SEO_LINK_FARM heuristic indicates a large number of links, likely for SEO manipulation or to host various payloads.

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.me/wix?keyword=alternative+android+market+apk+2.3+3
    • https://cdn.shopify.com/s/files/1/0428/4104/7206/files/migulisik.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/42479515564.pdf
    • https://cdn.shopify.com/s/files/1/0431/3962/9218/files/zofora.pdf
    • https://cdn.shopify.com/s/files/1/0432/4445/4056/files/4553762563.pdf
    • https://cdn.shopify.com/s/files/1/0437/6159/8616/files/salif_keita_tommorrow.pdf
    • https://cdn.shopify.com/s/files/1/0431/9812/0094/files/54377592056.pdf
    • https://cdn.shopify.com/s/files/1/0428/1437/4047/files/panetixiwepapofenajujolov.pdf
    • https://cdn.shopify.com/s/files/1/0431/1724/8672/files/fokodorok.pdf
    • https://cdn.shopify.com/s/files/1/0428/1748/7011/files/kejotosijirelujiz.pdf
    • https://cdn.shopify.com/s/files/1/0437/9947/8434/files/toshiba_recovery_wizard.pdf
    • https://cdn.shopify.com/s/files/1/0462/3109/3397/files/austronesian_migration.pdf
    • https://cdn.shopify.com/s/files/1/0429/0638/6595/files/88567432273.pdf
    • https://cdn.shopify.com/s/files/1/0429/3017/6159/files/997_carrera_4s_performance.pdf
    • https://cdn.shopify.com/s/files/1/0447/1390/2234/files/possesive_adjectives_elementary_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0436/9373/6089/files/namojawibomaben.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_off00005f03.bin
9ba19bba78425e99653dda42f4e57ba52cf48b85ed6dace1be6cde25edac825a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F03 5368 bytes
font_01_sfnt_off0000713f.bin
391e97d2a10775b94f6b4a3a35388a42807d977a15d9e1462ad50915a11b13a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x713F 10592 bytes

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