Malicious PDF — malware analysis report

Static analysis result for SHA-256 d60deae31b187b5f…

MALICIOUS

PDF

46.2 KB Created: 2020-08-09 03:38:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e4ff10991b3f233cc902c8e50def6222 SHA-1: 9acd34bd2379624f5c54816a36957d88b19688fa SHA-256: d60deae31b187b5fd671f957f0ef8ff37a11642fc3c26574ebf6b1d25320fcce
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to 'Arduino uno atmega328p datasheet pdf' and the malicious URL. The ML classifier strongly supports the malicious verdict. The primary attack vector appears to be a phishing lure using a fake datasheet to trick users into visiting a malicious URL.

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=arduino+uno+atmega328p+datasheet+pdf
    • http://files.adrianpeterson3.com/uploads/1/3/0/7/130776407/915a43c0a4.pdf
    • http://files.mmejoyal.com/uploads/1/3/0/8/130814387/totixuzalem-vodugilite-pimasabonarem.pdf
    • http://files.unitedchurchofgenoa.com/uploads/1/3/1/1/131163620/ca2562.pdf
    • http://files.glamorgananimalclinic.com/uploads/1/3/1/4/131438216/2a13dabe.pdf
    • http://files.willyssolekitchen.com/uploads/1/3/2/8/132814305/vejuxabirinen_nezal_xawidomeg.pdf
    • http://files.willyssolekitchen.com/uploads/1/3/2/8/132814
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/74535711799.pdf
    • https://cdn.shopify.com/s/files/1/0430/7851/6885/files/januxatikesenexomenet.pdf
    • https://cdn.shopify.com/s/files/1/0430/9798/1089/files/72034573673.pdf
    • https://cdn.shopify.com/s/files/1/0429/8906/0259/files/atlas_map_of_south_africa.pdf
    • https://cdn.shopify.com/s/files/1/0427/7580/6119/files/4164719237.pdf
    • https://cdn.shopify.com/s/files/1/0429/8709/4177/files/dagozefugitobeba.pdf
    • https://cdn.shopify.com/s/files/1/0429/6415/6582/files/names_of_angels_in_the_bible_and_their_duties.pdf
    • https://cdn.shopify.com/s/files/1/0434/5059/7528/files/discord_how_to_delete_all_messages.pdf
    • https://cdn.shopify.com/s/files/1/0430/0763/9711/files/61505084018.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007540.bin
3d5293c63c5737bbf694f2312a834c935014b0d43a4845251fc281fa910cd953
pdf-font-stream PDF embedded font (sfnt) at offset 0x7540 5904 bytes
font_01_sfnt_off00008930.bin
64879a43ac68ab4c5385e2d675e593ea10c48032b598a92dab0cf4e0214d20cd
pdf-font-stream PDF embedded font (sfnt) at offset 0x8930 9980 bytes