Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfe68fd0ca2e205e…

MALICIOUS

PDF

43.6 KB Created: 2020-08-22 19:06:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2f3324862a6325da443e6a5415c94efc SHA-1: 1f83185a5704cc4517235bf8516a9299c42f743e SHA-256: cfe68fd0ca2e205e3b189640803ab256340237405112520686dff8f40c179706
152 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, specifically pointing to 'https://ttraff.com/pify?keyword=tiger+cage+1988+full+movie'. This URL is likely used to redirect users to malicious content or phishing pages. The document also contains a mass external PDF link farm, with many links hosted on shopify.com, suggesting an attempt to obscure the true malicious destination. No scripts were extracted from this sample.

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=tiger+cage+1988+full+movie
    • http://files.naturlandet.dk/uploads/1/3/1/8/131858791/7424121.pdf
    • http://duwene.katiegreenedoulaservice.com/uploads/1/3/1/4/131437756/fixutisilodi.pdf
    • http://rasene.cancersurvivalwhatsnext.com/uploads/1/3/0/7/130740025/219d6e4877.pdf
    • http://files.likelytreasuresblog.com/uploads/1/3/1/6/131606268/8a16a12543ff.pdf
    • http://files.lasthit.eu/uploads/1/3/1/4/131455903/505de.pdf
    • https://cdn.shopify.com/s/files/1/0427/9074/8316/files/8887851875.pdf
    • https://cdn.shopify.com/s/files/1/0454/3309/4312/files/linajiwidaxelig.pdf
    • https://cdn.shopify.com/s/files/1/0429/5173/7498/files/kujuziboxosilipikivedat.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zaxolaxowixinetubosi.pdf
    • https://cdn.shopify.com/s/files/1/0431/1947/6896/files/61552029507.pdf
    • https://cdn.shopify.com/s/files/1/0432/7289/6678/files/english_to_bengali_dictionary_in_format_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/4948/3426/files/5737794135.pdf
    • https://cdn.shopify.com/s/files/1/0433/6903/7980/files/54919120609.pdf
    • https://cdn.shopify.com/s/files/1/0431/2429/3794/files/43315486402.pdf
    • https://cdn.shopify.com/s/files/1/0435/8553/6161/files/basara_2_heroes_android.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_off0000571a.bin
792189f0260b729d1b3d287a5618ff0fab1e7764ef9a86977967a5598c14515b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x571A 4504 bytes
font_01_sfnt_off000066e1.bin
e18b1a21b534a60d56024446dfd4cd8ae80ea42dd4c461f7e0a0a549ac7d6898		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66E1 5432 bytes
font_02_sfnt_off00007956.bin
f876d4701fc0759776f2986105e8bfc8ba9c84e6b4aefcd2c7e98e35d14cbffc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7956 12452 bytes

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