Malicious PDF — malware analysis report

Static analysis result for SHA-256 2110c2bcda7909d0…

MALICIOUS

PDF

52.4 KB Created: 2020-08-20 02:56:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a29e8e7299a769b40ec5f1b093c4f63d SHA-1: 7bf92bd83cd8fc9ff125064386d95baaf935372a SHA-256: 2110c2bcda7909d0da2192dbf0b44cc7f0a5ab1188f81f3d5f85e7824b2f7391
150 Risk Score

Malware Insights

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

The PDF contains a link farm and a specific redirector URL, indicating a phishing or malicious content delivery attempt. The document body, though heavily obfuscated, contains the same malicious URL and references to game cheats, suggesting a lure to a malicious site. The ML classifier strongly supports the malicious verdict.

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.cc/pify?keyword=drift+max+araba+yar%25C4%25B1%25C5%259F%25C4%25B1+hile+apk
    • http://files.catamounthillassociation.org/uploads/1/3/1/3/131384255/nelib.pdf
    • http://files.lindsay-hamilton.com/uploads/1/3/2/6/132695569/6583356.pdf
    • http://files.teamjam.org/uploads/1/3/0/9/130969851/1721316.pdf
    • http://tavojobif.guitarbuilderonline.com/uploads/1/3/0/9/130969723/nepebuxizemugul.pdf
    • http://files.audacitytheatrelab.com/uploads/1/3/1/4/131453188/zepisikoje.pdf
    • https://cdn.shopify.com/s/files/1/0431/9094/3904/files/juzunozixive.pdf
    • https://cdn.shopify.com/s/files/1/0428/6529/5526/files/81375418061.pdf
    • https://cdn.shopify.com/s/files/1/0428/5962/6655/files/37052489364.pdf
    • https://cdn.shopify.com/s/files/1/0435/7927/7467/files/sandwich_theorem_calculus.pdf
    • https://cdn.shopify.com/s/files/1/0428/9685/1111/files/nojekuvibuvepakixas.pdf
    • https://cdn.shopify.com/s/files/1/0432/1977/9742/files/jemalezimik.pdf
    • https://cdn.shopify.com/s/files/1/0430/9087/0423/files/6420305610.pdf
    • https://cdn.shopify.com/s/files/1/0431/0892/5600/files/zoranifagud.pdf
    • https://cdn.shopify.com/s/files/1/0432/3731/0632/files/taduwotopiwotevapog.pdf
    • https://cdn.shopify.com/s/files/1/0452/5824/4257/files/luxifosugokoja.pdf
    • https://cdn.shopify.com/s/files/1/0430/7058/7029/files/ccna_icnd1_exam_questions.pdf
    • https://cdn.shopify.com/s/files/1/0447/8844/9437/files/morphology_of_flowering_plants_ncert_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0429/0953/2316/files/69052098145.pdf
    • https://cdn.shopify.com/s/files/1/0436/9652/1369/files/ios_10._2_public_beta_4.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_off00006848.bin
b75ee2bb3965427cc4816abf06ea7c1b4752064852c79b2fbcdd001a3f4e60d2
pdf-font-stream PDF embedded font (sfnt) at offset 0x6848 5616 bytes
font_01_sfnt_off00007b44.bin
ebfd5d7d6d8bd1134d92ff780c868f2a7b3055a9254887cc7005ce5cd832216e
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B44 16944 bytes
font_02_sfnt_off0000aca6.bin
ea75db71c9df7250347a03039f742fcd189f5fc3f08964e696816fa8b5227073
pdf-font-stream PDF embedded font (sfnt) at offset 0xACA6 16092 bytes