Malicious PDF — malware analysis report

Static analysis result for SHA-256 732edb234b6d363a…

MALICIOUS

PDF

47.0 KB Created: 2020-08-08 03:01:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cf38b289d436820429b1f6408fd2cdf2 SHA-1: 6e4e1b022001789a9afe9eb66febda2956aff2f8 SHA-256: 732edb234b6d363a6527660fa13d0b81dd84f1c0f80fad56c99ed3d1907addd9
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is designed to lead users to further malicious content. The document body, though heavily obfuscated, contains text related to 'calculus 1 limits problems and solutions pdf' and the URL itself, suggesting a lure to trick users into clicking the link. The presence of numerous other PDF links, many hosted on Shopify, indicates a potential link farm or SEO manipulation tactic to distribute malicious content.

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=calculus+1+limits+problems+and+solutions+pdf
    • http://files.wilkinsartandcreative.com/uploads/1/3/1/4/131454102/mesadaxo.pdf
    • http://files.crossingbridgeslifecoaching.com/uploads/1/3/0/9/130969993/lapefiduzex_sakakenarimi_xibizem_bunikigeb.pdf
    • http://files.teatimewithnaomi.org/uploads/1/3/2/6/132681783/6401340.pdf
    • http://muwebe.hrmattersottawa.com/uploads/1/3/0/7/130775934/livewojipijob.pdf
    • http://files.78thfrasersmontreal.org/uploads/1/3/0/7/130739996/tasuzijin_gesipel.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0434/2412/0984/files/38026036252.pdf
    • https://cdn.shopify.com/s/files/1/0432/4065/2960/files/periodic_table_of_elements_black_and_white_printable.pdf
    • https://cdn.shopify.com/s/files/1/0434/5511/9512/files/58999610997.pdf
    • https://cdn.shopify.com/s/files/1/0430/9227/9460/files/41071030279.pdf
    • https://cdn.shopify.com/s/files/1/0438/6599/7472/files/water_pollution_causes_effects_and_control_measures.pdf
    • https://cdn.shopify.com/s/files/1/0436/1430/6467/files/piwironisenamozoxuxav.pdf
    • https://cdn.shopify.com/s/files/1/0436/2466/1154/files/pikuturotesizijukifu.pdf
    • https://cdn.shopify.com/s/files/1/0432/4740/3168/files/44766779391.pdf
    • https://cdn.shopify.com/s/files/1/0430/3526/3138/files/52376383709.pdf
    • https://cdn.shopify.com/s/files/1/0431/6931/7020/files/defuzezun.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/furupokexopaxabisovijuwu.pdf
    • https://cdn.shopify.com/s/files/1/0434/0134/7226/files/juxesenazoxaf.pdf
    • https://cdn.shopify.com/s/files/1/0433/3050/2806/files/pokegasudumozererapa.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_off00006425.bin
1dee87790d8006c4e17bec0ec2ed392d361b6c90bc525dc0bd94f35924eaccaa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6425 5400 bytes
font_01_sfnt_off00007662.bin
4e14c4056c39b37bd79bf86dd21a1cf3fa1b65d5a76d11e241bcc0f438437a36		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7662 13420 bytes
font_02_sfnt_off0000a0bb.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA0BB 4324 bytes

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