Malicious PDF — malware analysis report

Static analysis result for SHA-256 177aa8635bd51097…

MALICIOUS

PDF

80.0 KB Created: 2020-10-28 04:50:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 265101ad245fb5fef4899ded788b3c9e SHA-1: 90401787ac5b48c8d03b073100bb57c4072baf93 SHA-256: 177aa8635bd5109747cd99af31a119ad0d7220192f3f729937cb656eb57f67f3
154 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for linking to known malicious redirector infrastructure, specifically pointing to 'https://gettraff.ru/123?keyword=anatolian+peninsula+map'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, one of which is a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains the 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://gettraff.ru/123?keyword=anatolian+peninsula+map
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/18ab993c-bbda-4f84-b5d3-85e0ba3931d0/ridegivewamifo.pdf
    • https://uploads.strikinglycdn.com/files/3040f0c6-2ec5-44b7-93a3-aea5d0c1aa8e/54543228266.pdf
    • https://uploads.strikinglycdn.com/files/6f55bb37-1f9e-4fdf-8343-fbf088ffbb60/cepde_gta_san_andreas.pdf
    • https://s3.amazonaws.com/jamokaroxoj/ansys_beam_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0486/8669/4550/files/36044861383.pdf
    • https://cdn.shopify.com/s/files/1/0431/9418/7933/files/xewedakagifim.pdf
    • https://cdn.shopify.com/s/files/1/0266/9487/7379/files/delurawikibatedavetisavax.pdf
    • https://cdn.shopify.com/s/files/1/0437/6035/3429/files/46490461113.pdf
    • https://uploads.strikinglycdn.com/files/6ee4a63b-6a38-42b0-b605-3d43788f86d5/vuvejaxad.pdf
    • https://uploads.strikinglycdn.com/files/b20fccb7-7111-417f-956f-f3b9340761a5/50016280220.pdf
    • https://uploads.strikinglycdn.com/files/bb6f3d87-dc67-4429-949b-cfa32c933c15/lepilisipivasuxatu.pdf
    • https://uploads.strikinglycdn.com/files/fd519f3a-d8f2-4d88-926f-41d2a1c59763/ranifojezawor.pdf
    • https://uploads.strikinglycdn.com/files/36753305-b8d7-49b4-b055-e20fe2907143/xforce_keygen_autocad_2015_x64.pdf
    • https://uploads.strikinglycdn.com/files/c8b4ab5e-1be3-448f-ae5a-2892e6192600/palme_biyoloji_konu_anlatC4B1mlC4B1_indir.pdf
    • https://uploads.strikinglycdn.com/files/b7099ba8-9ed3-4208-aa27-d08961dc4545/abyssal_demon_rs3.pdf
    • https://uploads.strikinglycdn.com/files/ab3d2839-bc78-42fd-b5a3-9509ac18fd8a/apex_learning_spanish_2_answers.pdf
    • https://uploads.strikinglycdn.com/files/09fde062-698d-4950-96f3-767db347da5b/kagoxovatagitiribagafo.pdf
    • https://uploads.strikinglycdn.com/files/967049c7-dad2-4c7f-83a1-9af74d05ac52/laxoze.pdf
    • https://cdn.shopify.com/s/files/1/0439/1898/3323/files/48646233932.pdf
    • https://cdn.shopify.com/s/files/1/0484/1150/8904/files/xagamulip.pdf
    • https://cdn.shopify.com/s/files/1/0484/7645/5066/files/geometry_chapter_3_quiz_2_answers.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_off0000e6f1.bin
23e68007ff081ca4a67b7c6d985dd4117e52b31ee19ea70f44d09246acaa8936		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE6F1 3212 bytes
font_01_sfnt_off0000f283.bin
e0ebbc3fb39aff4558bd4b84dda9785cb920f94eb5938c8e2dbf507a1cf74633		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF283 4856 bytes
font_02_sfnt_off000102f3.bin
ac8ecb8681b26c404bf072511bfec3d78779bf9f23a16a25068b0b0233f3496d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x102F3 16320 bytes

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