Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae90ad09c1500c16…

MALICIOUS

PDF

46.5 KB Created: 2020-08-05 17:13:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b140b6f0a8ce520e6c87ee4cb84107eb SHA-1: 202fe2cf3a89ba3821cdaa334eea2104d42bbbc8 SHA-256: ae90ad09c1500c1647c18a755d6c8046753710367011141487f00c87deb5eca2
150 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many pointing to Shopify domains, but one critical link redirects to a known malicious infrastructure at ttraff.com. The document body, though heavily obfuscated, contains the URL that triggers the malicious redirect. This suggests a lure to a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=brunelleschi+s+dome+book+pdf
    • http://files.healingrootshypnotherapy.com/uploads/1/3/0/8/130815277/mubitagimerutalil.pdf
    • http://dugowiviz.rochester-santa.com/uploads/1/3/1/0/131070872/22f0e.pdf
    • http://files.evasustar.com/uploads/1/3/1/1/131164204/gigukamalirupud.pdf
    • http://files.surfshoproastery.de/uploads/1/3/2/6/132683142/bimeka.pdf
    • https://cdn.shopify.com/s/files/1/0430/3945/7431/files/werijadij.pdf
    • https://cdn.shopify.com/s/files/1/0428/4553/6419/files/84492716999.pdf
    • https://cdn.shopify.com/s/files/1/0427/6633/6166/files/24403187414.pdf
    • https://cdn.shopify.com/s/files/1/0432/3885/0728/files/81333015441.pdf
    • https://cdn.shopify.com/s/files/1/0427/6820/3942/files/pirabob.pdf
    • https://cdn.shopify.com/s/files/1/0431/7331/4715/files/25182732085.pdf
    • https://cdn.shopify.com/s/files/1/0434/5787/2039/files/91346299434.pdf
    • https://cdn.shopify.com/s/files/1/0428/0342/9535/files/36246068361.pdf
    • https://cdn.shopify.com/s/files/1/0432/7889/3214/files/26435748940.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sakemiribukewud.pdf
    • https://cdn.shopify.com/s/files/1/0433/7513/2821/files/tarolunefokafojus.pdf
    • https://cdn.shopify.com/s/files/1/0437/3797/2897/files/75870243897.pdf
    • https://cdn.shopify.com/s/files/1/0428/9350/8771/files/33550425179.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_off0000775a.bin
28b44c03e4fe1a1dcf51cbf88e054e7709dd205a9e9f75befbf2c244c68ce730		 pdf-font-stream PDF embedded font (sfnt) at offset 0x775A 5436 bytes
font_01_sfnt_off000089ad.bin
cb274af26bf832fb111c847c573152eb70afc67335de722a499155bcf26af4b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89AD 10256 bytes

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