Malicious PDF — malware analysis report

Static analysis result for SHA-256 362326410eebab57…

MALICIOUS

PDF

53.9 KB Created: 2020-08-08 02:15:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ca774b238b4dd1b5afbd3c0175b6e522 SHA-1: d32d08e4a76f3cfc16d4d61fa482d2a215a58824 SHA-256: 362326410eebab574599ebbab3ec952243b296c31a82a9ac4ccc9b1968da6896
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a "Switzerland road map pdf" title and embeds a large number of links, many of which point to a link farm hosted on Shopify. One of the embedded URLs, https://ttraff.com/pify?keyword=switzerland+road+map+pdf, is identified as a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document's primary purpose appears to be directing users to malicious or potentially malicious external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=switzerland+road+map+pdf
    • http://nenifer.davidgarza.com/uploads/1/3/1/4/131454065/gegexiledal-gafaz-jusezo.pdf
    • http://files.chelseanoellephotos.com/uploads/1/3/0/7/130740292/parijuko_pagidexaxowopot_bivugerokutad.pdf
    • http://files.naturparkmaribo.dk/uploads/1/3/1/3/131384468/jigezenuri.pdf
    • http://files.walshexchange.org/uploads/1/3/0/7/130776272/7bb8afbb9c5c7a8.pdf
    • https://cdn.shopify.com/s/files/1/0428/1348/9318/files/ditotarilopa.pdf
    • https://cdn.shopify.com/s/files/1/0430/9454/0452/files/segoridugonafugifit.pdf
    • https://cdn.shopify.com/s/files/1/0427/6856/4380/files/tewapurevame.pdf
    • https://cdn.shopify.com/s/files/1/0428/7338/9223/files/vejelawiwelokesesulepixe.pdf
    • https://cdn.shopify.com/s/files/1/0431/7193/8453/files/94663857142.pdf
    • https://cdn.shopify.com/s/files/1/0439/2825/6680/files/ledofalufudefu.pdf
    • https://cdn.shopify.com/s/files/1/0427/6148/6503/files/4312455521.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mojedisubeweful.pdf
    • https://cdn.shopify.com/s/files/1/0428/2338/5247/files/72621223939.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wirokole.pdf
    • https://cdn.shopify.com/s/files/1/0432/4045/6360/files/43077271861.pdf
    • https://cdn.shopify.com/s/files/1/0434/4948/3426/files/ledamig.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_off000081f3.bin
69fc915b80ac44439cd9ecf1678a6fbcb50d28914b3428ab411665503366ac77		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81F3 5040 bytes
font_01_sfnt_off0000930a.bin
c3d6f72738f63879376fbcf83a07deed511e233873098ed8c5c63b8792b0fd5b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x930A 13516 bytes
font_02_sfnt_off0000bccf.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBCCF 4324 bytes

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