Malicious PDF — malware analysis report

Static analysis result for SHA-256 1807b954717e3bca…

MALICIOUS

PDF

46.5 KB Created: 2020-08-07 02:42:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a20976d1273cd68546180336ee1ecbc SHA-1: 81d961f2e3c8a110df43734114f6470b1eac2725 SHA-256: 1807b954717e3bca3dd75b7bd71ce008e6145a634b7364b9ae72dc18c17fe6c5
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL, suggesting an attempt to trick users into visiting a malicious site. The presence of numerous external PDF links further supports the 'SEO Link Farm' heuristic, indicating a campaign to distribute 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/pify?keyword=calendar+2020+malaysia+printable+pdf
    • http://files.mayohayeslibrary.org/uploads/1/3/2/6/132681812/divizofe_kilolinepuna.pdf
    • http://rajiju.rottensocks.com/uploads/1/3/1/3/131380158/4013711.pdf
    • http://files.bealegacybuilder.com/uploads/1/3/0/7/130775350/1501f.pdf
    • http://dalefufi.dancersinkaz.com/uploads/1/3/1/4/131453329/41e0a.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0430/7543/6705/files/39476492291.pdf
    • https://cdn.shopify.com/s/files/1/0432/3157/6231/files/apexogenesis_review.pdf
    • https://cdn.shopify.com/s/files/1/0433/7870/4536/files/exploring_chemical_analysis_5th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0431/7180/7391/files/91987313519.pdf
    • https://cdn.shopify.com/s/files/1/0429/5032/8486/files/sakafifojivapusado.pdf
    • https://cdn.shopify.com/s/files/1/0430/3696/7063/files/bubukimupapovotukuf.pdf
    • https://cdn.shopify.com/s/files/1/0439/6518/6206/files/john_r_taylor_classical_mechanics.pdf
    • https://cdn.shopify.com/s/files/1/0434/6403/2422/files/jovubibeduxup.pdf
    • https://cdn.shopify.com/s/files/1/0438/3378/6530/files/buxeto.pdf
    • https://cdn.shopify.com/s/files/1/0436/0355/8564/files/55833121988.pdf
    • https://cdn.shopify.com/s/files/1/0429/5943/7975/files/mijunivopoku.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/8529439237.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000069c1.bin
2cfc7f13a375a6c96f8b6976d0dff6cc782bd5c13bbe7c5cae22817fd0ffa472		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69C1 5404 bytes
font_01_sfnt_off00007c03.bin
874450676efb21cbcb3d8acb41575ec9a3fbc8af2f2fae13be419ea60da3890c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C03 10080 bytes
font_02_sfnt_off00009e84.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9E84 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.