Malicious PDF — malware analysis report

Static analysis result for SHA-256 abf3e799980130ed…

MALICIOUS

PDF

44.9 KB Created: 2020-09-08 22:48:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 602ba8e456a8d36a11dd689b763f53f3 SHA-1: 9bc1920de590e9ba6bc01e8a8d191230e75eb889 SHA-256: abf3e799980130ed5f98d3af4b84af5ebf50a0b9dec00bf0ba1457fea2d565cb
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, many of which point to a link farm hosted on Shopify. The primary heuristic indicates that the document links to a known malicious redirector infrastructure. The document body, though partially corrupted, contains the URL that triggers the malicious redirector. The presence of a link farm suggests an attempt to manipulate search engine results or distribute malicious content through seemingly benign documents.

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.me/wix?keyword=funny+yahoo+answers+ouija+board
    • https://cdn.shopify.com/s/files/1/0434/5715/1142/files/zumujitawejoxag.pdf
    • https://cdn.shopify.com/s/files/1/0437/5999/2990/files/gawereweruropumite.pdf
    • https://cdn.shopify.com/s/files/1/0432/1270/1860/files/3442778453.pdf
    • https://cdn.shopify.com/s/files/1/0433/8240/7335/files/organisation_of_buganda_kingdom.pdf
    • https://cdn.shopify.com/s/files/1/0432/1358/6600/files/bulgarian_phonetic_windows_8_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/8237/4561/files/mediaset_play_app_android_tv.pdf
    • https://cdn.shopify.com/s/files/1/0459/6590/1991/files/war_chess_3d_game.pdf
    • https://static.usrfiles.com/ugd/6924eb_e88a420b04eb4391b0d91e19233d478c.pdf
    • https://static.usrfiles.com/ugd/22bf55_16fc2ca8580b41b09f454a48d78936b0.pdf
    • https://static.usrfiles.com/ugd/de60da_1236005a92514b2bacae79796a5a259c.pdf
    • https://static.usrfiles.com/ugd/b6bf5b_af9a602571f446f498633e2ef3411119.pdf
    • https://static.usrfiles.com/ugd/4bb894_3124eafa593547988bb3021d26c0b80f.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007340.bin
4c43740d1e12c0231563cbb4f733f665a5b914ed29164152e5efdbc6c54b78fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7340 5244 bytes
font_01_sfnt_off00008523.bin
906ee1fadbeffd937416b7ca613d43644005bdeb784b3e98958724c321b99ac4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8523 9892 bytes

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