Malicious PDF — malware analysis report

Static analysis result for SHA-256 93f4d7a69a0854e5…

MALICIOUS

PDF

48.8 KB Created: 2020-08-23 01:39:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9879d81aa4d52c22ac4036cb53c109fa SHA-1: f678d44848303771a3f541473480ac81c653a594 SHA-256: 93f4d7a69a0854e52caef145e438bfc5d85f973ad9fed47321b89ceb9289713d
160 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com', which is used in a social engineering lure. The document body explicitly contains the URL 'https://ttraff.com/pify?keyword=acrobat+reader+alternative+android' and suggests the user install an alternative to Acrobat Reader, a common tactic for malware delivery or credential harvesting. Additionally, a large number of external PDF links were found, with the first pointing to a Shopify domain.

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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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=acrobat+reader+alternative+android
    • http://fafidob.rosebayrotary.com/uploads/1/3/1/6/131606756/jepuzarit.pdf
    • http://rekapawob.alanmitchellplasterers.com/uploads/1/3/1/6/131606490/rapilaxeloduzawaleme.pdf
    • http://zisuzi.sussexflowinitiative.org/uploads/1/3/0/7/130776428/gojigafumuloref.pdf
    • http://malasoxu.arf-private-investigators.com/uploads/1/3/1/8/131858419/gojalozux_vuwizu_biwaxezaziwo_vurorisotuz.pdf
    • http://files.throatslashtattoo.com/uploads/1/3/0/7/130739227/dosilinodigil.pdf
    • https://cdn.shopify.com/s/files/1/0433/9928/2845/files/togoxarego.pdf
    • https://cdn.shopify.com/s/files/1/0450/0425/9492/files/information_technology_entrepreneurship_and_innovation.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/depusulolunifanilux.pdf
    • https://cdn.shopify.com/s/files/1/0432/8259/6004/files/89545458088.pdf
    • https://cdn.shopify.com/s/files/1/0432/2567/7982/files/tegabixofibos.pdf
    • https://cdn.shopify.com/s/files/1/0429/8843/7655/files/sekutipatubavegononoze.pdf
    • https://cdn.shopify.com/s/files/1/0430/9575/2864/files/girulogukojelojejukinozu.pdf
    • https://cdn.shopify.com/s/files/1/0433/9469/5329/files/systems_of_linear_inequalities_practice_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0430/3667/2162/files/rebogelakulevejitokiv.pdf
    • https://cdn.shopify.com/s/files/1/0435/1049/7434/files/22180917661.pdf
    • https://cdn.shopify.com/s/files/1/0431/3127/3383/files/hex_color_codes.pdf
    • https://cdn.shopify.com/s/files/1/0437/5163/7141/files/dotumem.pdf
    • https://cdn.shopify.com/s/files/1/0431/0653/3525/files/gotitasufobix.pdf
    • https://cdn.shopify.com/s/files/1/0438/5816/5925/files/vitaturep.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/
    • https://cdn.shopify.com/s/files/1/0437/516

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000080b6.bin
573ce5a80f9f8ba4ad2f45f648214ba2eab1ec198974187f2fed84f9524b75b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80B6 4944 bytes
font_01_sfnt_off0000918f.bin
09aa16c7a3593347d01ff5059ab4a09cde5a2aea1ab9cf04a91654e5b5be952a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x918F 10652 bytes

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