Malicious PDF — malware analysis report

Static analysis result for SHA-256 77994825d21e4151…

MALICIOUS

PDF

36.0 KB Created: 2020-08-11 07:33:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 037ea035ffa773133b9695e2b8b47006 SHA-1: 6dc83b7d802dc4bd73b54900d46e3a1fddf0045e SHA-256: 77994825d21e41518a18cb8462f07d54a5e777b0c5076a00b874dec7de7f5709
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many of which point to a link farm designed to host malicious content. One prominent link redirects to known malicious infrastructure at 'ttraff.cc'. The document body, though obfuscated, contains the same lure text as the malicious URL, suggesting a phishing attempt to redirect users to harmful sites.

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.cc/pify?keyword=english+fairy+tales+pdf
    • http://pugebi.scottzonemedia.com/uploads/1/3/1/6/131606490/goxokufobuxipen-rozoti-nikora-mesepawisig.pdf
    • http://files.michaelsautodetailing.com/uploads/1/3/1/6/131637163/b44f5.pdf
    • http://files.toastygoat.com/uploads/1/3/0/8/130813898/e310a5f9b8d8a2e.pdf
    • http://turolen.hongkongsprings.com/uploads/1/3/0/8/130814575/fojalasezuvipud.pdf
    • http://files.yunialores.com/uploads/1/3/1/4/131437508/munijezaze_jezav_zugijowenodufej_tikitovililamo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/77639208294.pdf
    • https://cdn.shopify.com/s/files/1/0431/3343/6066/files/mogasidegefenakowi.pdf
    • https://cdn.shopify.com/s/files/1/0434/6078/8390/files/detadumisuv.pdf
    • https://cdn.shopify.com/s/files/1/0428/3459/1907/files/74010872751.pdf
    • https://cdn.shopify.com/s/files/1/0430/8022/0826/files/mitimagifalekodajaxabizi.pdf
    • https://cdn.shopify.com/s/files/1/0436/0486/9277/files/dikebenabivekefor.pdf
    • https://cdn.shopify.com/s/files/1/0437/3233/6791/files/philips_all_in_one_cooker_recipes.pdf
    • https://cdn.shopify.com/s/files/1/0432/3786/7687/files/greater_soul_gem.pdf
    • https://cdn.shopify.com/s/files/1/0433/1234/9334/files/ischemic_stroke_pathophysiology.pdf
    • https://cdn.shopify.com/s/files/1/0432/6958/7104/files/metabolic_autophagy.pdf
    • https://cdn.shopify.com/s/files/1/0431/3638/5175/files/91447743997.pdf
    • https://cdn.shopify.com/s/files/1/0430/4132/5207/files/five_types_of_adsorption_isotherm.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004fca.bin
674266531faffb7831b10ad9d9a05497b9e7ed9e302de6f62a4ca8bb19855a16		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4FCA 5364 bytes
font_01_sfnt_off00006204.bin
3b10e230efeb9719023f7889b736a03f08913a0899ff57479c543d4a97e98b83		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6204 9852 bytes

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