Malicious PDF — malware analysis report

Static analysis result for SHA-256 0037f29e2a9f6378…

MALICIOUS

PDF

72.4 KB Created: 2020-08-24 06:07:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bb5a5b874b3b9805d738b9852698d325 SHA-1: 8375a8b59b77bb044b2a98ae48344c49508a0eff SHA-256: 0037f29e2a9f6378320b02917deaa93acfc43eb950c8ee18b962372cfabff2b5
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised as a Skyrim settings guide. This redirector likely leads to a malicious payload download. The PDF also contains a large number of links to other PDFs, suggesting a link farm or SEO poisoning tactic to distribute malicious content.

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=skyrim+enb+settings+guide
    • http://files.btozpublishing.com/uploads/1/3/1/4/131406835/kakejited-bisurixubivok.pdf
    • http://jivapu.rawpetfoodtennessee.com/uploads/1/3/0/7/130775045/gemuru_gefowonojubevin_nadeb.pdf
    • http://files.hearttolifedesigns.com/uploads/1/3/2/3/132303382/dizexex.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0434/1334/0316/files/calorimetry_sample_problems.pdf
    • https://cdn.shopify.com/s/files/1/0428/5287/6455/files/1248499883.pdf
    • https://cdn.shopify.com/s/files/1/0431/3192/8740/files/36286705145.pdf
    • https://cdn.shopify.com/s/files/1/0435/1007/1460/files/60181661856.pdf
    • https://cdn.shopify.com/s/files/1/0434/6403/2422/files/fojegufevo.pdf
    • https://cdn.shopify.com/s/files/1/0428/5857/8086/files/mobogenie_android_8._0.pdf
    • https://cdn.shopify.com/s/files/1/0437/7152/7330/files/16924466394.pdf
    • https://cdn.shopify.com/s/files/1/0463/6285/3531/files/56329101479.pdf
    • https://cdn.shopify.com/s/files/1/0430/6747/4087/files/risuviwo.pdf
    • https://cdn.shopify.com/s/files/1/0437/7057/7045/files/77217915015.pdf
    • https://cdn.shopify.com/s/files/1/0427/9740/0223/files/14810492871.pdf
    • https://cdn.shopify.com/s/files/1/0431/6902/2109/files/sugudosolilalipetuvezi.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d170.bin
945bde4fafd9573c785c310bcc3f33468b7a089a42f8f286e6216a677729c8e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD170 5084 bytes
font_01_sfnt_off0000e2a0.bin
a1b677e17ec2bfdfd15a695f8dae945c24166262ae179c7f60daaac0ffff5bda		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE2A0 10588 bytes
font_02_sfnt_off0001069a.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1069A 4324 bytes

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