Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fe417bc132ccc25…

MALICIOUS

PDF

91.1 KB Created: 2020-08-13 14:47:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 653ce3c5dcfced236d4e3ba009424909 SHA-1: 1d14cf3218be030d3cc68a47fc7fa9f7819799d4 SHA-256: 7fe417bc132ccc256c0e2c8ca1ced35ea534df62070762d9086d539dfbe84ab2
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wb?keyword=sequence%20and%20series%20calculus%20pdf'. This indicates the document's primary purpose is to redirect users to malicious content. The document body, though heavily obfuscated, contains the same URL, reinforcing the redirection attempt. No scripts were extracted from this sample.

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.ru/wb?keyword=sequence%20and%20series%20calculus%20pdf
    • http://files.art-rogue.com/uploads/1/3/0/9/130969368/kudugadobejufax.pdf
    • http://files.harmonautoinsurance.com/uploads/1/3/1/0/131071249/3663888.pdf
    • http://pebovo.susanmcguire.ca/uploads/1/3/1/1/131164447/fakogikekinenederate.pdf
    • http://files.velolumino.com/uploads/1/3/0/7/130740062/mufulejod_kexukazorivi.pdf
    • http://zebos.patrickwboyerjr.com/uploads/1/3/0/8/130874222/sadenuvuzexedepamas.pdf
    • https://cdn.shopify.com/s/files/1/0428/9373/8143/files/jozivevomizajifepoxiv.pdf
    • https://cdn.shopify.com/s/files/1/0437/3538/4225/files/manhattan_logic_games.pdf
    • https://cdn.shopify.com/s/files/1/0428/5811/9334/files/77229187336.pdf
    • https://cdn.shopify.com/s/files/1/0429/3325/6345/files/10819356581.pdf
    • https://cdn.shopify.com/s/files/1/0437/7441/0901/files/vasis.pdf
    • https://cdn.shopify.com/s/files/1/0438/7730/2427/files/sevijafudibaraxixozil.pdf
    • https://cdn.shopify.com/s/files/1/0431/5031/1579/files/satavinexivareruvu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lubogalevomiwubojaxijafax.pdf
    • https://cdn.shopify.com/s/files/1/0432/5857/7046/files/34387172355.pdf
    • https://cdn.shopify.com/s/files/1/0435/0525/4566/files/xakak.pdf
    • https://cdn.shopify.com/s/files/1/0430/5197/4818/files/cours_japonais_gratuit.pdf
    • https://cdn.shopify.com/s/files/1/0440/6706/1910/files/remington_model_8.pdf
    • https://cdn.shopify.com/s/files/1/0428/1607/7991/files/56293400648.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f492.bin
87244121cea14b4834e80d4455131d3f555405e075f3dbc90e3b6cb19bbb9f70		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF492 5072 bytes
font_01_sfnt_off000105cd.bin
a6ca8d1c0f4cee7d614fd3aee9ec190982ed538bd223afdd1db3a370884a8995		 pdf-font-stream PDF embedded font (sfnt) at offset 0x105CD 16380 bytes
font_02_sfnt_off000139a2.bin
72edccc4a97f4dff4f020a219a46f7fdb477537bcc00df00b8e0733da3a7bcdd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x139A2 16592 bytes
font_03_sfnt_off0001507c.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1507C 4324 bytes

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