Malicious PDF — malware analysis report

Static analysis result for SHA-256 49ab8419f102f2bd…

MALICIOUS

PDF

50.2 KB Created: 2020-09-16 15:52:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fdc6ae56f2651588c5eb2f45920ff63f SHA-1: b93320fc0982349517f9b6834308a969cfc0b3d9 SHA-256: 49ab8419f102f2bda0a346d79314eccfc7ca06a1060fe7371881c44b7b57b0ae
128 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically identified as a malicious redirector. The document body, though partially corrupted, contains text related to 'Get the strap apk for firestick' and a URL that matches the malicious redirector. This suggests a social engineering attack aiming to trick users into downloading malware by posing as a legitimate application download. The presence of a 'download button' heuristic further supports this attack vector.

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.me/wix?keyword=get+the+strap+apk+for+firestick
    • https://938288e2-fc56-4fb5-bed7-bc702d028269.filesusr.com/ugd/26481d_b595aba13666487784d627524b616977.pdf?index=true
    • https://25f6dffb-7213-4c0c-a1fb-344d591bc2d3.filesusr.com/ugd/bfbc46_33e6281e650446ae93187974c175488c.pdf?index=true
    • https://ae47d128-d92d-4072-9256-b7fff903fd58.filesusr.com/ugd/b7306e_8f35e2941ef04ff4b65f9444f49e8f33.pdf?index=true
    • https://97c67264-ddc1-4d5d-873e-7a46605d8976.filesusr.com/ugd/5ea691_d22bd27cdb0d43ef905c7b454630d825.pdf?index=true
    • https://e14bb928-9fdf-4b2b-b0ce-34448d74041e.filesusr.com/ugd/3bcfef_48f584719a4d44179d3080ff70db4150.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0429/6415/6575/files/jokab.pdf
    • https://cdn.shopify.com/s/files/1/0427/9628/6111/files/95987655400.pdf
    • https://177ea60a-5d15-4fa6-bc4b-254c90950b07.filesusr.com/ugd/edb4a7_ceabb44e8b584c06803664ab920a0fbe.pdf?index=true
    • https://ea9ad652-7068-4ecc-b889-28e925308e8b.filesusr.com/ugd/9ea91e_43d376d570254d83a49ef195b1908b8d.pdf?index=true
    • https://e22d4776-cc12-4ed1-8f80-13b0e9dcc520.filesusr.com/ugd/f34323_1cf44128c7af4dfb87b1e555182001cf.pdf?index=true
    • https://cd5b3bea-4d0a-4bfd-864f-0a07bd623901.filesusr.com/ugd/fd4c29_517e826c13e24aa2908656ef03a582e3.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0429/1674/1286/files/second_conditional_exercises_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0431/8124/4577/files/45688550363.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_off000077d0.bin
7b5b2a856b7d3f4e119818223c2947a674c58483e64057a76f098835a84e2e2e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77D0 4848 bytes
font_01_sfnt_off0000885c.bin
cb5992ba99a1ddcc53fde8de36f68946732b073c9d6ea70b5e55e7f86b0a95b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x885C 10868 bytes
font_02_sfnt_off0000ad77.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAD77 4324 bytes

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