Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c7324b69693f7e3…

MALICIOUS

PDF

56.7 KB Created: 2020-08-18 21:29:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f465c04bb2544506b488f443f53ff4f5 SHA-1: 9428498c10d35f912c3b9d6b33e993922bbfeb3d SHA-256: 6c7324b69693f7e3a0aefa8a7efdb1ada9d5bdf9c8d4c92ff7464a12771fccce
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=integrated+bsc+bed+form+date+2019'. The document body also contains this URL, suggesting it's the primary lure. The presence of a large number of external PDF links, many pointing to Shopify domains, indicates a link farm or SEO manipulation tactic. While no scripts were explicitly extracted, the PDF structure and link farm behavior are indicative of malicious intent, likely for phishing or distributing further malware.

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=integrated+bsc+bed+form+date+2019
    • http://files.7lakesboatrentals.com/uploads/1/3/1/6/131606035/vulixutasimevaxonani.pdf
    • http://jomaxob.shopmmarie.com/uploads/1/3/0/7/130776433/3dcf5eddcd2050.pdf
    • http://files.worldcupworld.com/uploads/1/3/0/8/130873783/gorakoku.pdf
    • http://files.englishservicesforscientists.com/uploads/1/3/1/4/131405956/vuzoxetusunelaf.pdf
    • http://dipeme.hpvaction.org/uploads/1/3/1/3/131383652/pekefesonegil_pojovilozokobe_debik_kegutaximo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • https://cdn.shopify.com/s/files/1/0432/7342/0965/files/15332951113.pdf
    • https://cdn.shopify.com/s/files/1/0429/3571/3958/files/monster_legends_breeding_guide_with_charts.pdf
    • https://cdn.shopify.com/s/files/1/0435/6472/8479/files/nitro_pro_7_to_word_converter_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3750/files/74746754361.pdf
    • https://cdn.shopify.com/s/files/1/0436/2915/0368/files/zofejevabesukafekozim.pdf
    • https://cdn.shopify.com/s/files/1/0434/9113/1554/files/21224544444.pdf
    • https://cdn.shopify.com/s/files/1/0430/6527/8625/files/nupozoseropedexutokeri.pdf
    • https://cdn.shopify.com/s/files/1/0434/1363/5226/files/52552491084.pdf
    • https://cdn.shopify.com/s/files/1/0432/8348/0736/files/bayesian_logistic_regression.pdf
    • https://cdn.shopify.com/s/files/1/0431/7010/3452/files/nawiw.pdf
    • https://cdn.shopify.com/s/files/1/0432/5546/4104/files/xewopu.pdf
    • https://cdn.shopify.com/s/files/1/0434/5007/3240/files/alternator_in_car.pdf
    • https://cdn.shopify.com/s/files/1/0434/3313/2184/files/wolfgang_puck_food_processors.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/surorut.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007407.bin
204bb7f9b23b059b45541f1c671e259c99d3d9fcbf70a41241930a27ed63b442		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7407 5868 bytes
font_01_sfnt_off000087e2.bin
60904f27f51d3ebe0822623ecf88ecca37af5f5883c6b1a0c7c8334d5a4974be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87E2 14832 bytes
font_02_sfnt_off0000b5ef.bin
2aee49a16ca9195f8973cd1b553b9dceef0c34a9ee76acc5352926965dca6bcb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB5EF 9844 bytes

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