Malicious PDF — malware analysis report

Static analysis result for SHA-256 48891cbadd616e66…

MALICIOUS

PDF

38.0 KB Created: 2020-08-19 03:40:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c59ee45c6d2db7628d5c3507430cbb53 SHA-1: 1ec5ea02e701a97d899fa1b452e08408bb1e64f3 SHA-256: 48891cbadd616e66c0606b4a8ccb4c47ce43c0a84e6c6245ceeff27ef44c53b3
152 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically 'ttraff.com'. The document body also contains this URL and numerous other links hosted on 'cdn.shopify.com' and other domains, suggesting a link farm designed to obscure the final destination. The primary malicious URL is https://ttraff.com/pify?keyword=amadeus+airline+platform, which is likely used to redirect users to a phishing or malware-hosting site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=amadeus+airline+platform
    • http://raromas.legalandcommercial.com/uploads/1/3/1/6/131637562/mitudixowojoke.pdf
    • http://files.itshealthywholefoods.co.nz/uploads/1/3/0/8/130874029/8240188.pdf
    • http://rekozageb.mobileasylum.com/uploads/1/3/1/6/131606457/laxujomabet-petumewijit-balikogepaxe.pdf
    • https://cdn.shopify.com/s/files/1/0434/9480/1568/files/jagididaj.pdf
    • https://cdn.shopify.com/s/files/1/0431/9900/4827/files/12313397862.pdf
    • https://cdn.shopify.com/s/files/1/0433/1785/4373/files/56878951437.pdf
    • https://cdn.shopify.com/s/files/1/0434/4040/6684/files/hypoglycemia_newborn_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0437/1188/9562/files/netflix_cracked_apk_onhax.pdf
    • https://cdn.shopify.com/s/files/1/0431/9238/5700/files/zozajemosepedibubuzoga.pdf
    • https://cdn.shopify.com/s/files/1/0431/3546/7669/files/geforumuzowixiluk.pdf
    • https://cdn.shopify.com/s/files/1/0437/7985/0391/files/wafexasawotazam.pdf
    • https://cdn.shopify.com/s/files/1/0429/8162/1919/files/16663539532.pdf
    • https://cdn.shopify.com/s/files/1/0433/6150/1349/files/tremble_chords_g.pdf
    • https://cdn.shopify.com/s/files/1/0427/4293/9814/files/blueparrott_b250-_xt_manual.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_off00004e03.bin
288192e1576619ffcc339d9d00eb9855cc06f9078cff6dd407be8d0992f5f933		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E03 5176 bytes
font_01_sfnt_off00005f7e.bin
af74f27d138575f48e87b52ae2ab348568d6ebccfbdfa3e15bef18d92aeee0c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F7E 9632 bytes
font_02_sfnt_off000080a6.bin
de2d7c30fffd372bc0f817aefd3b6ecb9ca1cef318952ce984d975e16942040e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80A6 2600 bytes

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