Malicious PDF — malware analysis report

Static analysis result for SHA-256 69e29ac42a460ef5…

MALICIOUS

PDF

58.8 KB Created: 2020-08-06 11:12:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 085717c5777f531d31233c1ef64eb301 SHA-1: 35fdeb1c8ba5547359e23055b9b2ad099b55e1cb SHA-256: 69e29ac42a460ef57b62824370b83df36a574f24fbbffec4527e23e62208a7f0
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple embedded links, with a critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains a URL that appears to be the primary lure. The presence of numerous external PDF links suggests a link farm or SEO poisoning attempt to drive traffic to malicious sites.

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=master+of+money+sunday+adelaja+pdf
    • http://tezudibaw.quintessencensemble.com/uploads/1/3/1/8/131871699/0c9cf9beb80e913.pdf
    • http://tufefinel.kofc1947.org/uploads/1/3/2/6/132681670/1fe9dbeec8cae.pdf
    • http://files.tlcsupportservices.org/uploads/1/3/1/8/131857916/f4ff3.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/9309/8660/files/cast_of_the_whole_nine_yards.pdf
    • https://cdn.shopify.com/s/files/1/0430/3428/0090/files/autocad_architecture_2020_user_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/3092/1895/files/2429161837.pdf
    • https://cdn.shopify.com/s/files/1/0431/2327/7973/files/already_yet_still_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0431/7020/1760/files/cost_accounting_15th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0431/1567/5815/files/wevamuwanu.pdf
    • https://cdn.shopify.com/s/files/1/0437/1975/3879/files/43584973610.pdf
    • https://cdn.shopify.com/s/files/1/0436/6221/3273/files/bticino_living_now_prezzi.pdf
    • https://cdn.shopify.com/s/files/1/0439/0469/6472/files/python_dijkstra_heapq.pdf
    • https://cdn.shopify.com/s/files/1/0439/7583/5806/files/arithmetic_reasoning_in_telugu_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/3645/8654/files/35734523113.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a794.bin
46af96abda3ed82a1e0acefc5ccbe8bbb761d5c8b6d3fa0ba7b024d9d0b88280
pdf-font-stream PDF embedded font (sfnt) at offset 0xA794 5372 bytes
font_01_sfnt_off0000b9de.bin
a5fd4b46c5b2987cfee0282c15d6f57ae68992c0705384b7e5cef0000693e022
pdf-font-stream PDF embedded font (sfnt) at offset 0xB9DE 10580 bytes