Malicious PDF — malware analysis report

Static analysis result for SHA-256 204ada7d449e9aa7…

MALICIOUS

PDF

39.6 KB Created: 2020-08-02 00:04:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a6faa2237daaa01df627c8e7d9f9d4f7 SHA-1: 49ae25b436d4ff6b97254dac343e6d5f44f21671 SHA-256: 204ada7d449e9aa7b438fd7f100c5dd42dd9c5e030e723041256f2b6bd121c59
150 Risk Score

Malware Insights

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

The PDF file contains a lure related to 'San Andreas mods installer' and embeds multiple links. One of these links, 'https://ttraff.com/pify?keyword=san+andreas+mods+installer', is identified as a malicious redirector. The PDF also exhibits characteristics of a link farm, with numerous external links, many hosted on cdn.shopify.com. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to redirect users to harmful content.

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=san+andreas+mods+installer
    • http://files.beyondtheimages.com/uploads/1/3/1/6/131637307/d182ba021dd.pdf
    • http://files.halalinjapan.com/uploads/1/3/1/3/131379420/xexikadodo.pdf
    • http://files.ourharvestmoonhomestead.com/uploads/1/3/1/6/131637047/genokolegul-newivuvulejofu.pdf
    • https://cdn.shopify.com/s/files/1/0431/7442/8827/files/gojadanojomawokosupexip.pdf
    • https://cdn.shopify.com/s/files/1/0431/3910/4930/files/xukab.pdf
    • https://cdn.shopify.com/s/files/1/0433/0350/1989/files/34434853459.pdf
    • https://cdn.shopify.com/s/files/1/0434/0439/4646/files/rasuxubiwinoxiximisam.pdf
    • https://cdn.shopify.com/s/files/1/0438/1586/2434/files/ff12_esper_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/5119/6314/files/xabaginipus.pdf
    • https://cdn.shopify.com/s/files/1/0440/5251/2918/files/81813717557.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sakemiribukewud.pdf
    • https://cdn.shopify.com/s/files/1/0428/5205/7244/files/tanh_activation_function.pdf
    • https://cdn.shopify.com/s/files/1/0441/2047/3752/files/wuvunuvabud.pdf
    • https://cdn.shopify.com/s/files/1/0432/1175/1588/files/megopesonaloxoli.pdf
    • https://cdn.shopify.com/s/files/1/0433/7618/1400/files/90538430626.pdf
    • https://cdn.shopify.com/s/files/1/0438/4079/8885/files/kopajovuvemuziziveba.pdf
    • https://cdn.shopify.com/s/files/1/0449/6467/5752/files/etodolac_400_mg.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mojijemorewowasimagaxo.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_off00005ad1.bin
9cfc08835938e997d2c14b5f767d0834dce08807a1cbaa3f0f3ae935ff856f39
pdf-font-stream PDF embedded font (sfnt) at offset 0x5AD1 5076 bytes
font_01_sfnt_off00006bf5.bin
90708ab5d459d917dea070be1bb74fa35253f4146887a29195d0e3ec2aa91d78
pdf-font-stream PDF embedded font (sfnt) at offset 0x6BF5 11260 bytes