Malicious PDF — malware analysis report

Static analysis result for SHA-256 3058b6cbaa7c3621…

MALICIOUS

PDF

38.6 KB Created: 2020-08-23 01:28:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fbac06dda6b89ff7ec42653b8bf7c17f SHA-1: 1d3046d5f0fc76076b6a954cd112e2f688219168 SHA-256: 3058b6cbaa7c3621fc1372067616b9449f96ccd971518118c82d521307cf7724
152 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL and text related to 'Benji bananas apk cheat', suggesting a lure. The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm strategy, likely to obscure the malicious redirector. No scripts were extracted, limiting the analysis of further execution steps.

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=benji+bananas+apk+cheat
    • http://xapuzazo.dustinwills.com/uploads/1/3/1/3/131383982/tupunamojele.pdf
    • http://files.kathyschipperart.com/uploads/1/3/0/7/130739557/rarokefa.pdf
    • http://toxipo.legacycaengineering.com/uploads/1/3/0/9/130969690/f2a1bd.pdf
    • http://files.andyknappmusic.com/uploads/1/3/1/4/131453682/f70a261938f9.pdf
    • http://files.redleaf-properties.com/uploads/1/3/1/1/131164159/b7227a0f6ed.pdf
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/roomba_500_series_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0462/3194/5365/files/82653712396.pdf
    • https://cdn.shopify.com/s/files/1/0433/2758/6472/files/gdb_commands_in_linux.pdf
    • https://cdn.shopify.com/s/files/1/0433/6304/1430/files/49316518342.pdf
    • https://cdn.shopify.com/s/files/1/0431/8353/8331/files/wamekaferebadorobiwuz.pdf
    • https://cdn.shopify.com/s/files/1/0433/2781/5833/files/tolixexonenolafegeda.pdf
    • https://cdn.shopify.com/s/files/1/0429/7090/6780/files/powafujatowebudej.pdf
    • https://cdn.shopify.com/s/files/1/0431/7410/1149/files/kadadawanolojuwupigiji.pdf
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/lateral_thinking_puzzles_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0431/9959/4656/files/tilirovositobunib.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_off000057c2.bin
b6fe22bd4b3e06e4011adced66b1fb9c9548ccf2e729957ddfc34628016d149d
pdf-font-stream PDF embedded font (sfnt) at offset 0x57C2 5224 bytes
font_01_sfnt_off00006980.bin
a930c94fc5a07eb5eba33f517a2f30b53c46f1f387fa39500a4cdf91a6f1a999
pdf-font-stream PDF embedded font (sfnt) at offset 0x6980 11016 bytes