Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1167be2de0cb28b…

MALICIOUS

PDF

46.8 KB Created: 2020-08-10 12:30:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b53b332346df8bf91bdb9bb64b74730b SHA-1: 8539b3ad61e9893dceed202518b2689d1252f0f8 SHA-256: b1167be2de0cb28b977faadb2ae579c0f9038beb24cfa6ef960b0e0117aae5e0
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector at 'https://ttraff.ru/pify?keyword=ieee+citation+generator+pdf'. This suggests the document is designed to trick users into visiting malicious infrastructure under the guise of a citation generator. The ML classifier also strongly indicated maliciousness.

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.ru/pify?keyword=ieee+citation+generator+pdf
    • http://files.thedojoparamus.com/uploads/1/3/1/1/131164075/4302881.pdf
    • http://files.thinkingbetter.org.uk/uploads/1/3/0/7/130739783/87eb9b0f9fd00.pdf
    • http://files.apexespta.com/uploads/1/3/2/3/132302966/womajisujipa_nopikami_konozibibusup.pdf
    • http://files.thedottedpig.com/uploads/1/3/1/8/131856666/1342830.pdf
    • http://wogowipon.nctreasurechest.org/uploads/1/3/1/6/131607163/bidajozubilifuzaxa.pdf
    • https://cdn.shopify.com/s/files/1/0427/4746/1788/files/47552804040.pdf
    • https://cdn.shopify.com/s/files/1/0428/8705/3471/files/mujofulofuwubeno.pdf
    • https://cdn.shopify.com/s/files/1/0429/2270/5055/files/ditufimazorevetiv.pdf
    • https://cdn.shopify.com/s/files/1/0438/3204/9824/files/download_hallelujah_chorus.pdf
    • https://cdn.shopify.com/s/files/1/0437/8152/1565/files/angina_bullosa_haemorrhagica.pdf
    • https://cdn.shopify.com/s/files/1/0438/0377/1041/files/jafuronepop.pdf
    • https://cdn.shopify.com/s/files/1/0436/9242/5384/files/29741237474.pdf
    • https://cdn.shopify.com/s/files/1/0433/9790/6589/files/25977426612.pdf
    • https://cdn.shopify.com/s/files/1/0439/3595/7147/files/actuarial_mathematics_for_life_contingent_risks.pdf
    • https://cdn.shopify.com/s/files/1/0436/6244/2661/files/tifupibikujalubezituwixu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pesaveput.pdf
    • https://cdn.shopify.com/s/files/1/0435/5896/1320/files/carboplatino_efectos_adversos.pdf
    • https://cdn.shopify.com/s/files/1/0428/4933/7500/files/14123376329.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_off00006d17.bin
d04540bfca787e0153cb922a3b58d46c4acc149ff18c12fb4b45edc212b98be3
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D17 4836 bytes
font_01_sfnt_off00007d87.bin
378e83d042d5cd591e71c52eb55c7876bd833853d0dbed54e92157377a237a30
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D87 10060 bytes
font_02_sfnt_off00009ff4.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0x9FF4 4324 bytes