Malicious PDF — malware analysis report

Static analysis result for SHA-256 df30a293869f76f7…

MALICIOUS

PDF

42.8 KB Created: 2020-08-22 00:11:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4bf7e0c63e18d5ab321d5ab3726aceaf SHA-1: 00f9d6f11e3f115667a443492921db5963499fff SHA-256: df30a293869f76f7b9de10c53c894175a8bce55d2ba38cbc5050a097a12cc382
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.com/pify?keyword=diary+wimpy+kid+book+report', likely leads to a phishing or malware distribution site. The document also exhibits characteristics of a link farm, with numerous embedded URLs pointing to PDF files, many of which are hosted on potentially suspicious domains. No scripts were extracted, but the presence of the malicious redirector and the link farm structure strongly suggests a social engineering attack aimed at redirecting users to 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.com/pify?keyword=diary+wimpy+kid+book+report
    • http://kimev.aprendizajeactivobrumiel.com/uploads/1/3/1/6/131606289/jopuwigixapidado.pdf
    • http://nulabexab.westernanimalresources.org/uploads/1/3/2/6/132696063/patoxiwowu.pdf
    • http://nozenu.nancicharpentier.com/uploads/1/3/0/7/130739919/dopenewa.pdf
    • http://files.alegraloewenstein.com/uploads/1/3/0/7/130775244/6692149.pdf
    • https://cdn.shopify.com/s/files/1/0427/7580/6119/files/49437996452.pdf
    • https://cdn.shopify.com/s/files/1/0450/0452/1636/files/biwidejabolozevovijivuput.pdf
    • https://cdn.shopify.com/s/files/1/0432/7260/1756/files/56793044047.pdf
    • https://cdn.shopify.com/s/files/1/0432/5657/8206/files/83737969091.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zekimopesafirizaxos.pdf
    • https://cdn.shopify.com/s/files/1/0430/3156/0354/files/android_adapter_notifydatasetchanged_not_working.pdf
    • https://cdn.shopify.com/s/files/1/0431/4336/4759/files/zupak.pdf
    • https://cdn.shopify.com/s/files/1/0439/6548/1118/files/boneshaker_zinfandel.pdf
    • https://cdn.shopify.com/s/files/1/0431/3913/7697/files/17894044328.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_off00006882.bin
2c577cea34376227b0dd4523bce41fe49c0c984e94698b0b1b18f4d9f8e705e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6882 5292 bytes
font_01_sfnt_off00007a80.bin
30ec84f062e6fbac42d28125f7758e1caeca1ae75470b41897aed2e97b00205d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A80 10456 bytes

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