Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbbb872723356cbc…

MALICIOUS

PDF

44.2 KB Created: 2020-08-19 03:09:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 65d7b0672b9ea77cce83e2230309fd37 SHA-1: 350d3ecb88028be8549a7c131be6cd2edfd7cf94 SHA-256: dbbb872723356cbceed8661edeca3c513bd57aca60f7faae0879d6a5971b6941
128 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=contacts+backup+app+apk'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on Shopify. The document body also contains a call-to-action phrase, suggesting a lure to trick users into clicking the malicious link. The primary intent appears to be redirecting users to malicious infrastructure.

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.com/pify?keyword=contacts+backup+app+apk
    • http://ronigexop.sunloonwatch.org/uploads/1/3/1/8/131857334/xopukitixabuka_rosodatokutef.pdf
    • http://files.truthfinderspi.com/uploads/1/3/0/8/130814515/tojavezuzub_jefawibidekoto.pdf
    • http://files.shopataura.com/uploads/1/3/2/7/132712369/weralo_rarupafudobugiz_fibamixozirux_sefeluxegepajar.pdf
    • http://lakogadax.candretta.net/uploads/1/3/0/8/130814535/4958704.pdf
    • http://files.countrytowne.org/uploads/1/3/1/3/131380547/zalibi-guxuloxafuten-tarijudojejoz.pdf
    • https://cdn.shopify.com/s/files/1/0437/0595/8565/files/a343f_transmission_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/5415/4406/files/rezawomuja.pdf
    • https://cdn.shopify.com/s/files/1/0435/5126/0823/files/tukafimekajubamalerux.pdf
    • https://cdn.shopify.com/s/files/1/0439/2170/3067/files/deep_groove_ball_bearing_catalogue_skf.pdf
    • https://cdn.shopify.com/s/files/1/0434/3001/9237/files/galorenakokezesegaka.pdf
    • https://cdn.shopify.com/s/files/1/0435/1148/0472/files/airmen_mock_test.pdf
    • https://cdn.shopify.com/s/files/1/0435/4323/2661/files/sezalafif.pdf
    • https://cdn.shopify.com/s/files/1/0438/9624/2331/files/barukilisizoxikane.pdf
    • https://cdn.shopify.com/s/files/1/0437/9469/4304/files/83650148082.pdf
    • https://cdn.shopify.com/s/files/1/0428/2069/8268/files/hollywood_movie_websites.pdf
    • https://cdn.shopify.com/s/files/1/0440/7335/3381/files/maribix.pdf
    • https://cdn.shopify.com/s/files/1/0429/5937/2439/files/lagezep.pdf
    • https://cdn.shopify.com/s/files/1/0434/3411/5233/files/taket.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_off000061ef.bin
54fd1cbd70ddf84397586b24f30a1ed4f9f81d884c93d1aa3451b079080e32cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61EF 4740 bytes
font_01_sfnt_off00007216.bin
e076a14a1fcfdccb4a8d148354502eb467878090ba0b1d6744be5a2322341a10		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7216 10416 bytes
font_02_sfnt_off000095c9.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x95C9 4324 bytes

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