Malicious PDF — malware analysis report

Static analysis result for SHA-256 57b50c382d791b40…

MALICIOUS

PDF

50.2 KB Created: 2020-08-14 21:15:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fd19a8f0ce56d796fe415c584827be0d SHA-1: 8fd47eac28382bb8f8899d54fe9ab1f70666782b SHA-256: 57b50c382d791b406909af88e2c3949ab12f2ea4af3406d71ded561fcc7832c1
128 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to domains associated with link farms and redirectors. The primary malicious URL, 'https://ttraff.cc/pify?keyword=build+your+own+gaming+pc+guide+2018', is identified as a malicious redirector. The document body, though partially garbled, contains text related to a 'gaming pc guide' and includes the malicious URL, suggesting a lure to entice users to click the link. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external PDF links, and 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms the presence of malicious redirector infrastructure.

Heuristics 4

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=build+your+own+gaming+pc+guide+2018
    • http://files.kittywatchjapan.com/uploads/1/3/1/1/131164351/jufirixetofividoluk.pdf
    • http://files.artronshop.com/uploads/1/3/2/7/132740260/futapiv-zajufedodufo-kisurozoluxi.pdf
    • http://files.edinburghexpert.com/uploads/1/3/2/6/132695602/8784596.pdf
    • http://files.bronzebeautylounge.com/uploads/1/3/1/4/131482941/8103760.pdf
    • https://cdn.shopify.com/s/files/1/0431/0096/2967/files/ps3_horror_games.pdf
    • https://cdn.shopify.com/s/files/1/0430/5672/6165/files/60539623191.pdf
    • https://cdn.shopify.com/s/files/1/0427/6482/8838/files/vatagixenizonuporofodi.pdf
    • https://cdn.shopify.com/s/files/1/0428/1889/6038/files/cours_d_amortissement_degressif.pdf
    • https://cdn.shopify.com/s/files/1/0437/2122/8442/files/ranowufupusajifurazo.pdf
    • https://cdn.shopify.com/s/files/1/0431/5847/0810/files/10039269540.pdf
    • https://cdn.shopify.com/s/files/1/0437/7182/2229/files/gewab.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000077a1.bin
8535f264612be7b64cfca182890ec2159de2879b8334ccfc46ee453634be1a95
pdf-font-stream PDF embedded font (sfnt) at offset 0x77A1 5780 bytes
font_01_sfnt_off00008b3f.bin
99507e8f9a456fd60a56e345ca09817c075189deb61490e082ac98888d8313eb
pdf-font-stream PDF embedded font (sfnt) at offset 0x8B3F 10196 bytes
font_02_sfnt_off0000ae32.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0xAE32 4324 bytes