Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee1388bf78ce000d…

MALICIOUS

PDF

39.4 KB Created: 2020-08-13 00:22:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ce5acc20590b28c0ce0fb182b11aa2cc SHA-1: b201333733041d56a203d068991b040caba0bc01 SHA-256: ee1388bf78ce000dcebe5e8d599d6801fcc665a8587aea10800e56125b0f4c8e
152 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, specifically a ttraff.com URL disguised as a Cigna prior authorization form. The document also exhibits characteristics of a link farm, with numerous links pointing to external PDFs hosted on various domains. This suggests a phishing or malware distribution campaign leveraging social engineering.

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/wb?keyword=cigna%20prior%20authorization%20form%20pdf
    • http://jilis.rebeccasheraton.com/uploads/1/3/1/0/131069934/gozojulugibawusasig.pdf
    • http://files.12stonesmoldcleaning.com/uploads/1/3/0/8/130873983/xexesiriferut_nawuli.pdf
    • http://files.tynksgemstonedesigns.com/uploads/1/3/2/7/132740415/7381d2f1749d4.pdf
    • http://files.integrityautomotiveolympia.com/uploads/1/3/1/4/131408942/1651004.pdf
    • http://files.rubberbymok.com/uploads/1/3/0/7/130775520/eb4a0dea7c.pdf
    • https://cdn.shopify.com/s/files/1/0433/4557/6088/files/gezovadozexilifenokobe.pdf
    • https://cdn.shopify.com/s/files/1/0433/6048/5541/files/temagatajupulokosa.pdf
    • https://cdn.shopify.com/s/files/1/0439/6145/0654/files/caesar_cipher_decoder.pdf
    • https://cdn.shopify.com/s/files/1/0432/3488/5796/files/gijofararodivirelimelifu.pdf
    • https://cdn.shopify.com/s/files/1/0438/5941/1094/files/67928111734.pdf
    • https://cdn.shopify.com/s/files/1/0438/0013/3793/files/como_convertir_un_archivo_java_a_ejecutable.pdf
    • https://cdn.shopify.com/s/files/1/0441/2047/3752/files/hey_there_delilah_piano_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0434/1887/8114/files/short_biography_of_william_shakespeare.pdf
    • https://cdn.shopify.com/s/files/1/0436/2492/3298/files/45373311564.pdf
    • https://cdn.shopify.com/s/files/1/0432/0142/9662/files/baminudodufuruni.pdf
    • https://cdn.shopify.com/s/files/1/0430/4060/4313/files/alter_ego_plus_1_guide_pedagogique.pdf
    • https://cdn.shopify.com/s/files/1/0433/2588/2518/files/80724072913.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d70.bin
59cd9572a1c6cd690f112dd31a7ca9b9976d6aed0a7271562b0537064c957392		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D70 5200 bytes
font_01_sfnt_off00006f01.bin
65ddc66b800812d84b4405bdd025835b02becc7a636a03aae161d091253ffeb8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F01 9820 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.