Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1a7041672efdfa3…

MALICIOUS

PDF

50.6 KB Created: 2020-08-14 20:41:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 845a7c9faa4825ae35fb82cc7c5ed078 SHA-1: 697763ee41244de3acc8498615158ea54526fd37 SHA-256: f1a7041672efdfa34149c6659a937eafa53a2e972bf6e389173f8df0368f122a
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This URL is embedded within the document body, disguised as a 'bubble game apk4fun' download. The PDF also exhibits characteristics of a link farm, with numerous links to other PDFs hosted on Shopify. The primary intent appears to be directing users to malicious infrastructure through a deceptive lure.

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.com/pify?keyword=bubble+game+apk4fun
    • http://files.soulflowerhealing.com/uploads/1/3/1/6/131606111/9917181.pdf
    • http://files.the608store.com/uploads/1/3/0/8/130873708/87b5a608b83c.pdf
    • http://files.gbyws.org/uploads/1/3/1/4/131483019/paludizixi-pazibokadelok-xovubonavegazuz-nobuxudisapefod.pdf
    • https://cdn.shopify.com/s/files/1/0433/4131/6249/files/66137384241.pdf
    • https://cdn.shopify.com/s/files/1/0439/1036/5339/files/attachments_rainbow_rowell_online.pdf
    • https://cdn.shopify.com/s/files/1/0429/9581/0455/files/make_bootable_usb_from_iso.pdf
    • https://cdn.shopify.com/s/files/1/0437/5393/0901/files/all_halo_reach_ranks.pdf
    • https://cdn.shopify.com/s/files/1/0432/6123/1262/files/16591613889.pdf
    • https://cdn.shopify.com/s/files/1/0428/2312/3100/files/12890283283.pdf
    • https://cdn.shopify.com/s/files/1/0431/5129/4628/files/98405908496.pdf
    • https://cdn.shopify.com/s/files/1/0434/1520/8098/files/22256876679.pdf
    • https://cdn.shopify.com/s/files/1/0432/7574/7483/files/musabevopab.pdf
    • https://cdn.shopify.com/s/files/1/0434/0393/5911/files/rixexaraxemonemexix.pdf
    • https://cdn.shopify.com/s/files/1/0430/7111/1330/files/rusubelukifevejafimexeko.pdf
    • https://cdn.shopify.com/s/files/1/0431/8127/7342/files/cat_verbal_ability_questions.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_off00006aa9.bin
127b44c9f93874c96d25eb7ddc4688780d8877ce931cf296363fb5748d8d514b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AA9 6744 bytes
font_01_sfnt_off00007b90.bin
4eb281ef1c59e148f9ac6d87d1a4c6ee99f8cd3d087e4df085dfa2d1f8e00174		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B90 4932 bytes
font_02_sfnt_off00008c4a.bin
c427e6f6b32184669ecb269015d813451379a1096bd52382b400375765570e7c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C4A 10132 bytes
font_03_sfnt_off0000af01.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAF01 4324 bytes

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