Malicious PDF — malware analysis report

Static analysis result for SHA-256 e48654853e590da6…

MALICIOUS

PDF

50.4 KB Created: 2020-08-14 21:22:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a0f3452c406388bdbd12fe97e6345d37 SHA-1: 5034b84c65ab5c1dc39194e7f6618e0cca0478a3 SHA-256: e48654853e590da66958dc66064a81dfa2a5ea8c1458e313d9703ae9cb8f5405
150 Risk Score

Malware Insights

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

The PDF was flagged for containing a malicious redirector link to ttraff.com and a large number of external PDF links, indicating a link farm. The ML classifier also strongly indicated maliciousness. The document body contains garbled text but includes the URL https://ttraff.com/pify?keyword=bolsa+de+valores+definicion+pdf, which is the primary indicator of malicious redirection.

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=bolsa+de+valores+definicion+pdf
    • http://files.makeasmartstart.com/uploads/1/3/2/3/132303060/jiwad-mekujo.pdf
    • http://files.jordanjaffe.com/uploads/1/3/0/8/130873997/nodokaxanaxarak.pdf
    • http://jugobuva.scsaast.org/uploads/1/3/1/4/131407405/gujitelor-bexuwurigew-ropozotexakifug.pdf
    • http://files.teamcraigracing.com/uploads/1/3/2/6/132681951/divofa.pdf
    • http://jujaru.philbg.ca/uploads/1/3/1/8/131856772/84485d2bcea7.pdf
    • https://cdn.shopify.com/s/files/1/0433/4295/4661/files/72663056814.pdf
    • https://cdn.shopify.com/s/files/1/0430/4430/7098/files/53118208401.pdf
    • https://cdn.shopify.com/s/files/1/0430/7343/7847/files/64334538911.pdf
    • https://cdn.shopify.com/s/files/1/0432/0926/1218/files/lugepalapolutujemap.pdf
    • https://cdn.shopify.com/s/files/1/0430/8677/4436/files/norumog.pdf
    • https://cdn.shopify.com/s/files/1/0437/1238/1079/files/pukategexopedazurezemu.pdf
    • https://cdn.shopify.com/s/files/1/0431/2439/2087/files/53815574901.pdf
    • https://cdn.shopify.com/s/files/1/0432/8521/7436/files/wordly_wise_book_7_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0452/5237/8784/files/gmo_history.pdf
    • https://cdn.shopify.com/s/files/1/0435/0777/7702/files/beethoven_fur_elise_piano_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0433/5714/3205/files/believer_imagine_dragons_guitar.pdf
    • https://cdn.shopify.com/s/files/1/0434/0695/0557/files/knee_exercises_ortho.pdf
    • https://cdn.shopify.com/s/files/1/0431/3707/3314/files/66133856634.pdf
    • https://cdn.shopify.com/s/files/1/0431/5535/7852/files/fumokudinixoxiwemewetavo.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/
    • https://cdn.shopify.com/s/files/1/0431/5535/7852/files/f

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000779a.bin
d406e14b58fe0a998d72a8d95d1672143706ef61166968af1225b0e088684c65
pdf-font-stream PDF embedded font (sfnt) at offset 0x779A 4968 bytes
font_01_sfnt_off00008888.bin
8ef4dc0e219a86a0578257b85beb6d082a8ceb3fcf2ad77df342a34056ea08d5
pdf-font-stream PDF embedded font (sfnt) at offset 0x8888 11100 bytes
font_02_sfnt_off0000ac96.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0xAC96 4324 bytes