Malicious PDF — malware analysis report

Static analysis result for SHA-256 b57b7fd22e906fdd…

MALICIOUS

PDF

46.2 KB Created: 2020-08-30 23:23:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 73bf35d4de7accb9dfe887b768e74975 SHA-1: 137957471ce0db80f5d27a1da121eeb8548da702 SHA-256: b57b7fd22e906fdd0a0bb258bfb45c3f2a8bcfe91f993112b68998f1c3ddb677
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, a common tactic for SEO poisoning or redirecting users to malicious content. One critical heuristic firing indicates a direct link to a known malicious redirector at 'https://ttraff.cc/wix?keyword=popee+the+performer+kedamono'. The document body, though heavily obfuscated, also contains this URL and numerous other links hosted on cdn.shopify.com, suggesting a link farm designed to distribute malicious content.

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/wix?keyword=popee+the+performer+kedamono
    • https://cdn.shopify.com/s/files/1/0434/1104/6558/files/23875462885.pdf
    • https://cdn.shopify.com/s/files/1/0429/1421/8143/files/pradeep_biology_class_10_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0430/2949/5959/files/bevinuvogigonometoja.pdf
    • https://cdn.shopify.com/s/files/1/0432/5045/0600/files/xovadijujuz.pdf
    • https://cdn.shopify.com/s/files/1/0427/9074/8316/files/94768864977.pdf
    • https://cdn.shopify.com/s/files/1/0463/6085/4683/files/84058065801.pdf
    • https://cdn.shopify.com/s/files/1/0433/6625/2703/files/12893732633.pdf
    • https://cdn.shopify.com/s/files/1/0428/7302/8775/files/dutorojodigukibufo.pdf
    • https://cdn.shopify.com/s/files/1/0431/8802/7556/files/tekofeju.pdf
    • https://cdn.shopify.com/s/files/1/0431/7505/1421/files/kanakopadamidekomezi.pdf
    • https://cdn.shopify.com/s/files/1/0433/8014/6334/files/konudujidufivulubiwu.pdf
    • https://cdn.shopify.com/s/files/1/0429/8250/6647/files/jogaketosa.pdf
    • https://cdn.shopify.com/s/files/1/0437/1313/4743/files/algorithms_illuminated_part_2_github.pdf
    • https://cdn.shopify.com/s/files/1/0433/3928/4645/files/wuloga.pdf
    • https://cdn.shopify.com/s/files/1/0432/6513/0658/files/bugositumobob.pdf
    • https://static.usrfiles.com/ugd/0789d5_eb6ce5e56e504d5db1895f1d372028dd.pdf
    • https://static.usrfiles.com/ugd/87a178_8f628de48a4b47888bb5f81de1e74817.pdf
    • https://static.usrfiles.com/ugd/9c43ec_a00aad913b604d25a29b3e19558bc1a8.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_off000068d5.bin
bf2ddaa93e326a08c5e4b7f4a01d46af24eb94c8b1f6d8f341a8e5fa8b7ac10d
pdf-font-stream PDF embedded font (sfnt) at offset 0x68D5 4032 bytes
font_01_sfnt_off00007731.bin
f4c62a193dc6f3482c7a599ce9eaae7ae042bb2dce602a15d8495f81a7245ee6
pdf-font-stream PDF embedded font (sfnt) at offset 0x7731 5136 bytes
font_02_sfnt_off00008882.bin
7bb4752a4fa4396f48ae106a47c90b2746662fa4f117509108bac30aa33f5ca3
pdf-font-stream PDF embedded font (sfnt) at offset 0x8882 10120 bytes