Malicious PDF — malware analysis report

Static analysis result for SHA-256 774b113a2d4ab399…

MALICIOUS

PDF

35.3 KB Created: 2020-10-29 08:17:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c07cdabecbbe5102a7b074550120311a SHA-1: b7d84f39c40b5b05107fd5de148f971550e765f0 SHA-256: 774b113a2d4ab399a08948332f7f857ca0985534422d871b21f70e65811ee873
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ggtraff.ru/pify?keyword=zelda+wand+of+gamelon+quotes', which is flagged as malicious. This suggests the document's primary purpose is to lure users to malicious infrastructure, likely for further exploitation or phishing.

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://ggtraff.ru/pify?keyword=zelda+wand+of+gamelon+quotes
    • https://vozunutav.weebly.com/uploads/1/3/0/9/130969695/xewewasimabapap.pdf
    • https://taxajadotediru.weebly.com/uploads/1/3/0/8/130873824/6601472.pdf
    • https://papunagaku.weebly.com/uploads/1/3/1/3/131384156/febuzelata-zavaxi-reregu-narixa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0501/7160/9240/files/maple_syrup_farm_stardew_valley.pdf
    • https://uploads.strikinglycdn.com/files/698bb821-47ac-43b6-8548-255ad571dc08/79849872765.pdf
    • https://s3.amazonaws.com/tonemakopinibem/how_long_can_you_keep_chicken_in_the_freezer_after_the_expiration_date.pdf
    • https://uploads.strikinglycdn.com/files/506dd751-b9fc-42fa-b8ba-fc60a13f9418/55664057602.pdf
    • https://uploads.strikinglycdn.com/files/ec411e03-2c1c-4a69-93f9-5a7089ab02f6/39684023979.pdf
    • https://s3.amazonaws.com/xafaxotaful/elf_on_the_shelf_goodbye_letter.pdf
    • https://s3.amazonaws.com/sugowubuf/seditomes.pdf
    • https://cdn.shopify.com/s/files/1/0482/2899/1130/files/53974856632.pdf
    • https://uploads.strikinglycdn.com/files/dfcf34ba-39ca-4543-b4df-aa397ff336c8/gaputujupow.pdf
    • https://s3.amazonaws.com/lebaxa/rugozurimiru.pdf
    • https://s3.amazonaws.com/tosevud/24456791878.pdf
    • https://s3.amazonaws.com/sorogamat/64291559640.pdf
    • https://s3.amazonaws.com/wefadep/alexei_stranger_things_meme.pdf
    • https://s3.amazonaws.com/kavitokolezub/duvinuja.pdf
    • https://s3.amazonaws.com/leteraxewe/viper_acr_for_sale_ebay.pdf
    • https://uploads.strikinglycdn.com/files/a4d83c79-de48-4214-a759-fbb62f0611a4/1_4_hp_electric_motor_watts.pdf
    • https://s3.amazonaws.com/zoromexemuzid/btec_level_3_national_applied_science_student_book.pdf
    • https://s3.amazonaws.com/pazifetanegapu/16468523026.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004c72.bin
63f63a26b49d28c35dc898e5f8aa2dafb1e6eff8b07a5d116a6c528a4d29cc35		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4C72 5304 bytes
font_01_sfnt_off00005e83.bin
3db85ba8b50f84c947b467123858fbbf05e479587b8ffecf4f874b6599acdca3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E83 9912 bytes

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