Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bc0ef654850cde5…

MALICIOUS

PDF

59.3 KB Created: 2020-08-26 05:19:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: eaad215512fcddcbaa301a6c5d5f394e SHA-1: 5240552a8bc747a701a31364d871fb805815d3ad SHA-256: 5bc0ef654850cde562e380657ed7e938c13f049972fd40ef680dd99b3031147e
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many of which point to potentially malicious or SEO-spam-related domains. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely intended to lead the user to a malicious site. The document body, though heavily obfuscated, contains the same redirector URL and a list of other URLs, suggesting a link farm or redirection scheme.

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=sustantivo+colectivo+de+ganso
    • http://files.jlsexteriorcleaning.com/uploads/1/3/1/4/131437246/movefafikuriniralumu.pdf
    • http://sibeg.ridgeandvalleyreptiles.com/uploads/1/3/1/0/131070588/9718205.pdf
    • http://files.silvertonffa.com/uploads/1/3/1/3/131383747/geruno_penuvok.pdf
    • http://vilage.trinityjamestown.com/uploads/1/3/0/9/130969754/mesigodurasod.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • https://cdn.shopify.com/s/files/1/0434/1337/3084/files/75539591931.pdf
    • https://cdn.shopify.com/s/files/1/0433/6215/6702/files/taittiriya_aranyaka_kannada.pdf
    • https://cdn.shopify.com/s/files/1/0428/7981/1750/files/sasixem.pdf
    • https://cdn.shopify.com/s/files/1/0433/4485/5195/files/32517299147.pdf
    • https://cdn.shopify.com/s/files/1/0431/1420/1250/files/shazam_family_transformation_scene.pdf
    • http://ximufox.cdlynn.people.ua.edu/uploads/1/3/1/8/131856698/vewevi_dozimovok_nopapesada_jukobopigezu.pdf
    • https://cdn.shopify.com/s/files/1/0437/9112/2584/files/19514709145.pdf
    • https://cdn.shopify.com/s/files/1/0430/7851/6885/files/fomadonibulazozegetibe.pdf
    • https://cdn.shopify.com/s/files/1/0434/9070/5574/files/jijejeg.pdf
    • https://cdn.shopify.com/s/files/1/0429/6821/9799/files/92160703667.pdf
    • https://cdn.shopify.com/s/files/1/0438/1428/9568/files/cardboard_gladiator_helmet_template.pdf
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/49467104278.pdf
    • https://cdn.shopify.com/s/files/1/0427/7728/0671/files/79189603032.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/
    • https://savannah.gnu.org/projects/freefont/
    • http://www.gnu.org/licenses/
    • http://www.gnu.org/copyleft/gpl.html
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000067ae.bin
60c2d839b4c3494601f6f477ff3657d1adc27fe15764339066e4fc25913c509e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67AE 7216 bytes
font_01_sfnt_off000079c0.bin
2f0a99237a513dc9924cb125cd099e2f533089997208afe4d1c4b3a9f28ea6e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79C0 5172 bytes
font_02_sfnt_off00008b67.bin
c33067f27de1f1d222da4c893d64afda9656cea70a10d4724a09e5e7ecf0a5dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B67 16944 bytes
font_03_sfnt_off0000bd4b.bin
02a927cd8eb3ab3be880a1c276ebd9159bcd7601e266afbdbbec3fe90271cd3f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBD4B 16288 bytes
font_04_sfnt_off0000d343.bin
6383a4122c1cf534e085e8261174d56fa69b6a1832b2acc45af6a739086e5bcf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD343 2548 bytes

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