Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2a6312d50e59cdd…

MALICIOUS

PDF

49.5 KB Created: 2020-08-19 10:05:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 49d768cdd5eaaad5c837d79492ecbbe7 SHA-1: 3442363cc6e9b2220510c7465f00a82f2c1cb76c SHA-256: d2a6312d50e59cdd214805bd6dff0dc10188d063cf5c6247df100713398faf4b
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, many of which are hosted on Shopify domains and appear to be part of an SEO link farm. One critical heuristic identified a link to a known malicious redirector infrastructure at `https://ttraff.cc/pify?keyword=bts+album+love+yourself+answer+list`. This suggests the document's primary purpose is to redirect users to malicious sites, potentially for phishing or malware distribution, under the guise of providing information about BTS albums.

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/pify?keyword=bts+album+love+yourself+answer+list
    • http://files.battlecreekendo.com/uploads/1/3/0/7/130775997/4503997.pdf
    • http://jovit.aleist.net/uploads/1/3/0/7/130775953/d277d39d7a553.pdf
    • http://files.meganracsmith.com/uploads/1/3/1/4/131452817/didowisub_kelujitebagad.pdf
    • http://liwenazut.chelseacakecompany.com/uploads/1/3/0/7/130740178/zemavadimadag.pdf
    • http://files.kugelcraft.com/uploads/1/3/2/7/132740536/df6adada.pdf
    • https://cdn.shopify.com/s/files/1/0434/2539/8945/files/48930104526.pdf
    • https://cdn.shopify.com/s/files/1/0432/9121/3980/files/duvakopilarobaxi.pdf
    • https://cdn.shopify.com/s/files/1/0433/2955/2552/files/alternative_to_adobe_premiere.pdf
    • https://cdn.shopify.com/s/files/1/0429/8450/5498/files/kanomuxifopogujax.pdf
    • https://cdn.shopify.com/s/files/1/0434/8674/0646/files/domino_theory_of_accident_causation.pdf
    • https://cdn.shopify.com/s/files/1/0429/8516/0857/files/sakakajojerelonaz.pdf
    • https://cdn.shopify.com/s/files/1/0434/2277/7496/files/69307936432.pdf
    • https://cdn.shopify.com/s/files/1/0429/2732/5343/files/genuwi.pdf
    • https://cdn.shopify.com/s/files/1/0430/7868/0727/files/alien_abduction_incident_in_lake_county.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_off00006696.bin
025cf3e4fff773785b7bec3794f6df8500ec793a468fd586e0fb3138f5acf1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6696 5672 bytes
font_01_sfnt_off00007a22.bin
683192e88f996dfb5ee3d30d9d772e378745ba9aac3d6919530d52f87b6191c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A22 5356 bytes
font_02_sfnt_off00008c62.bin
9cc3df03f9dce970d2266d9b4f847adb0fa108f5891d0df31932ad316775379b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C62 14084 bytes

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