Malicious PDF — malware analysis report

Static analysis result for SHA-256 04b0782960ea3a8e…

MALICIOUS

PDF

44.3 KB Created: 2020-08-31 08:49:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ffae2c4f090941ae314329fa6e53b78c SHA-1: 51dbdb5b9e79c05f082b6b966044f0dccdc58691 SHA-256: 04b0782960ea3a8ebe7723fb95490540b1959d8bfd7f87b5fc7c72463986fc39
154 Risk Score

Malware Insights

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

The PDF contains embedded links, with one prominently leading to a known malicious redirector. The document body, though partially corrupted, includes the text 'Moonshine still plans' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of numerous external PDF links further indicates a link farm, a common tactic for SEO poisoning or distributing 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/wix?keyword=moonshine+still+plans
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b8c837_0efc339b98e747a992879437c9e52293.pdf
    • https://static.usrfiles.com/ugd/64d889_4f7296500e824f6e8dd075db53c21362.pdf
    • https://static.usrfiles.com/ugd/b8c837_c773afb0a1c040b3abcb07471c7f7c08.pdf
    • https://static.usrfiles.com/ugd/d78803_9929dbe5bfe34d3ebd6f7c13bd3fd88c.pdf
    • https://static.usrfiles.com/ugd/b8c837_ae2353dbd8ff440390744f326616ca06.pdf
    • https://cdn.shopify.com/s/files/1/0429/6025/7177/files/76147938644.pdf
    • https://cdn.shopify.com/s/files/1/0439/6145/0654/files/vevukejeselevazogojisu.pdf
    • https://cdn.shopify.com/s/files/1/0432/3291/9720/files/bunebijojanobarusomijabi.pdf
    • https://cdn.shopify.com/s/files/1/0459/9044/5213/files/monster_bike_mission_game_apk.pdf
    • https://cdn.shopify.com/s/files/1/0439/4647/5678/files/food_adulteration_articles.pdf
    • https://cdn.shopify.com/s/files/1/0437/5969/8077/files/93432416007.pdf
    • https://cdn.shopify.com/s/files/1/0433/4845/9673/files/wuzipobinem.pdf
    • https://cdn.shopify.com/s/files/1/0434/1845/2120/files/contract_template.pdf
    • https://cdn.shopify.com/s/files/1/0431/9484/3293/files/akasam_thana_rekkalatho_video_song_free.pdf
    • https://cdn.shopify.com/s/files/1/0427/7967/2735/files/rukolujuz.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_off0000715a.bin
df24174ada17adb82a8fa6901ecc8ca9630112f6783d260164c381bf0395c633
pdf-font-stream PDF embedded font (sfnt) at offset 0x715A 4816 bytes
font_01_sfnt_off000081b8.bin
dc06a7b11e4f1c5c1993a4ace5e4e9f57ae0618e5afe45e0c14fa004a0c5527b
pdf-font-stream PDF embedded font (sfnt) at offset 0x81B8 10244 bytes