Malicious PDF — malware analysis report

Static analysis result for SHA-256 abeb30f3a623b6af…

MALICIOUS

PDF

47.2 KB Created: 2020-08-31 01:05:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 73f43cd6cc94c782f0be6efba7bdaf6b SHA-1: e948ade6cc953b57a7c06f966268f5e741aee944 SHA-256: abeb30f3a623b6afcfc02d8ab5a9bf7bf433360502be8c2f3be07df01050a3f8
120 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links pointing to external PDF files, a technique often used for SEO poisoning or to host phishing content. One of the primary links, 'https://ttraff.ru/wix?keyword=rodi+mood+%25C3%25BCr%25C3%25BCnleri', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains this URL and references to other PDF files hosted on static.usrfiles.com. No scripts were extracted, but the heuristic firings strongly suggest a malicious redirection attempt.

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/wix?keyword=rodi+mood+%25C3%25BCr%25C3%25BCnleri
    • https://static.usrfiles.com/ugd/f84671_d9db455ac2424ec7a89247a30dd4360b.pdf
    • https://static.usrfiles.com/ugd/74c34a_093293da310a490f88ccfa79cd2c542a.pdf
    • https://static.usrfiles.com/ugd/b8c837_545d58b1651b46a18cf7f2d7318c0028.pdf
    • https://static.usrfiles.com/ugd/865d50_250a33aba18f4d2f8a5095531c758047.pdf
    • https://static.usrfiles.com/ugd/1b8612_c05dc42d21ef45b9b7a35792f649808e.pdf
    • https://cdn.shopify.com/s/files/1/0427/4556/1254/files/whirlpool_cabrio_platinum_washer_and_dryer_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/9328/5277/files/vaxutudisipun.pdf
    • https://cdn.shopify.com/s/files/1/0428/8829/8662/files/legit_paypal_money_adder_no_survey_or_password.pdf
    • https://cdn.shopify.com/s/files/1/0463/2671/0433/files/chestnut_obstetric_anesthesia_free.pdf
    • https://static.usrfiles.com/ugd/de3d83_01aaa3e0fa8148c8861aa008cbb0c5e7.pdf
    • https://static.usrfiles.com/ugd/b8c837_f6669a76336f4ab58e9517c4f2a0b01a.pdf
    • https://static.usrfiles.com/ugd/b8c837_7f5ba125a79c4493881924967ba8e647.pdf
    • https://static.usrfiles.com/ugd/49be48_c67ddfc424854beaba17abe7a1803eab.pdf
    • https://static.usrfiles.com/ugd/d216cb_95a20591189e4c2f87d93524297c05ee.pdf
    • https://static.usrfiles.com/ugd/cc14e4_71fcbbff43524770be1af5229e4e6871.pdf
    • https://static.usrfiles.com/ugd/01bc73_b7c091f4a741466daff63ffdfe23abbc.pdf
    • https://static.usrfiles.com/ugd/b8c837_66d471974631470d906d39d0ad24135d.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_off00006d48.bin
31fc9f11e66f6c74f31b4f03abb4b88614aa812598780303ad63e6b13011e539
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D48 4420 bytes
font_01_sfnt_off00007c1d.bin
bc6caee27bdf1f9b628332301bc37a35cd82d92629727130e7851831ca86ea28
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C1D 11304 bytes
font_02_sfnt_off0000a006.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0xA006 4324 bytes