Malicious PDF — malware analysis report

Static analysis result for SHA-256 3879ea7ab230777b…

MALICIOUS

PDF

54.6 KB Created: 2020-08-15 04:20:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b380e3aef172330c75d316b380f5a4f1 SHA-1: a813de1afcf702f22a8d8cd1c6244246bf48337c SHA-256: 3879ea7ab230777b1478e4ebc9f8a0c0c20a2a29ea94def9cd16d291b5afb0ec
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

This PDF file exhibits malicious characteristics, primarily through its extensive use of embedded links. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates that at least one link points to known malicious redirector infrastructure, specifically 'https://ttraff.cc/pify?keyword=campione+novel+pdf'. Furthermore, the 'PDF_SEO_LINK_FARM' heuristic reveals a large number of external PDF links, suggesting an attempt to manipulate search engine results or distribute malicious content. The ML classifier also strongly flagged this file as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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.cc/pify?keyword=campione+novel+pdf
    • http://files.ladyteeproductions.com/uploads/1/3/2/7/132712127/vowunaferuf_xifabovilivu_ribotazure.pdf
    • http://files.ibbusinessandmanagement.com/uploads/1/3/1/6/131637606/c1768d48f6f.pdf
    • http://wifasa.jacobtrimble.com/uploads/1/3/1/3/131380625/ladek.pdf
    • http://zutejejan.wicklow.coralleisure.ie/uploads/1/3/1/3/131379290/bupakimelitugop.pdf
    • http://files.mountaineerthon.com/uploads/1/3/2/6/132681586/wagazuxomigevejo.pdf
    • https://cdn.shopify.com/s/files/1/0437/2417/7576/files/wedujamubofokolepiderage.pdf
    • https://cdn.shopify.com/s/files/1/0432/8056/4392/files/noduronasava.pdf
    • https://cdn.shopify.com/s/files/1/0437/3138/6529/files/brazilian_jiu_jitsu_self_defense_techniques.pdf
    • https://cdn.shopify.com/s/files/1/0429/9731/7785/files/63690742089.pdf
    • https://cdn.shopify.com/s/files/1/0434/3745/7575/files/pibabajaseden.pdf
    • https://cdn.shopify.com/s/files/1/0430/3791/7345/files/39358324207.pdf
    • https://cdn.shopify.com/s/files/1/0432/8275/9836/files/72272436996.pdf
    • https://cdn.shopify.com/s/files/1/0434/0655/7347/files/radiation_detection_and_measurement_solutions_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/5380/0859/files/40404598730.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d2d.bin
e04ff85f423ea93949d7a092f393c2c77e8e5058b8aa2113248ff43b784c2c11		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D2D 6704 bytes
font_01_sfnt_off000083d8.bin
f9bde0ac568ee1fee1443ca793124b82ffcfe1e75e1421790508173348017e87		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83D8 4880 bytes
font_02_sfnt_off00009462.bin
9d1185d51ca3d8e02341fdc9e3c2cd7efbce2e5d268fedbd62bce248c1ac9c9e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9462 2452 bytes
font_03_sfnt_off00009f01.bin
d1a907a926635b2f999e3cbde48f8f8eb588e6dffe54ee4e910b57521b017b04		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9F01 10428 bytes
font_04_sfnt_off0000c27b.bin
59ab9b4af8e7a84b11e139c9182b86e2609986dde8220c43e3e3072307e6589e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC27B 2056 bytes

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