Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e103d17a28952d5…

MALICIOUS

PDF

41.6 KB Created: 2020-08-06 18:53:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 82fb16d0ae58a1376e8acde5a07a7f6e SHA-1: b97777ab9e09c0740ac77158205479af78fcc248 SHA-256: 8e103d17a28952d523ee628f8fc0c49160838e42f78381d440667e03561e8528
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic indicating it links to known malicious redirector infrastructure. The document body, though malformed, suggests a lure related to 'possessive pronouns vs adjectives exercises pdf'. The primary malicious URL identified is https://ttraff.com/pify?keyword=possessive+pronouns+vs+adjectives+exercises+pdf. The file also contains a link farm pointing to numerous other PDFs, many hosted on Shopify, which is a common tactic for distributing malicious documents.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=possessive+pronouns+vs+adjectives+exercises+pdf
    • http://files.theaterdanceworkshop.org/uploads/1/3/1/4/131408062/4122345.pdf
    • http://files.sheilabycraftjewellery.com/uploads/1/3/0/8/130874278/63cd552.pdf
    • http://files.montanaterritorialalliance.org/uploads/1/3/1/3/131379353/kotipitivabuwom-dofunaxoguv-levujopol-sigirewafu.pdf
    • http://files.esibstudentsfront.com/uploads/1/3/1/6/131636642/likelofera.pdf
    • http://files.wildlifeworldwidephotographycompetition.com/uploads/1/3/1/3/131379040/d803572bb.pdf
    • https://cdn.shopify.co
    • https://cdn.shopify.com/s/files/1/0433/5819/1768/files/31889744486.pdf
    • https://cdn.shopify.com/s/files/1/0432/9524/4452/files/haloalkanes_and_haloarenes_notes.pdf
    • https://cdn.shopify.com/s/files/1/0427/3651/7286/files/36876899673.pdf
    • https://cdn.shopify.com/s/files/1/0430/6331/2533/files/rirabikurelupunovanavibon.pdf
    • https://cdn.shopify.com/s/files/1/0429/9109/1875/files/71967422385.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/77160317291.pdf
    • https://cdn.shopify.com/s/files/1/0433/1814/9285/files/dusojixexasetifokipuvade.pdf
    • https://cdn.shopify.com/s/files/1/0432/1129/2829/files/australia_rail_map.pdf
    • https://cdn.shopify.com/s/files/1/0434/7727/0692/files/69943675715.pdf
    • https://cdn.shopify.com/s/files/1/0430/9932/4580/files/kataromusujinune.pdf
    • https://cdn.shopify.com/s/files/1/0437/3122/2677/files/geforce_installation_failed.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/69865881622.pdf
    • https://cdn.shopify.com/s/files/1/0437/8502/7745/files/yugioh_gba_games.pdf
    • https://cdn.shopify.com/s/files/1/0435/5293/1995/files/jalemuvazo.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000050ea.bin
7c522e27222cd5394a7d71f347b541998b07c2c3ba016143525fc1e435892a41		 pdf-font-stream PDF embedded font (sfnt) at offset 0x50EA 5204 bytes
font_01_sfnt_off000062b9.bin
580c4c63973d4b499d3d0fa590bf471b2a7eec54022d0f31d82102766a454088		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62B9 12700 bytes
font_02_sfnt_off00008b13.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B13 4324 bytes

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