Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b9b17a7500f6d87…

MALICIOUS

PDF

50.6 KB Created: 2020-08-19 01:23:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 32f71653bb56d1072514a79ff9dbe5cb SHA-1: d7c195a8b25f8bca0814a93358ed4600a7def1cf SHA-256: 0b9b17a7500f6d87b88b60608333d0bb6fc185b470c117d3c4936f591772e30d
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to Shopify-hosted PDFs, suggesting a link farm or SEO manipulation tactic. One critical heuristic identified a redirector link to 'ttraff.com', indicating a malicious redirection attempt. The ML classifier also strongly flagged this PDF as malicious. The document body contains obfuscated text and URLs, reinforcing the malicious intent.

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=auxiliary+equation+pdf
    • http://files.thingsbybean.com/uploads/1/3/0/8/130874213/jukisokoxapu.pdf
    • http://files.thepeoplesbookkeeper.ca/uploads/1/3/1/3/131379792/duwiwavujekukax-sugurobe-luxezofo.pdf
    • http://files.lisalenarz.com/uploads/1/3/2/7/132740619/6e2d876a9.pdf
    • http://files.congioia.org/uploads/1/3/2/8/132814239/pudaraburamewa-vixamabaje-bisilolodasuril.pdf
    • http://files.traceyfox.co.uk/uploads/1/3/1/1/131164567/saxajuzibobemizavum.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/6962/8828/files/mivubasowugemis.pdf
    • https://cdn.shopify.com/s/files/1/0428/9599/9129/files/potozuvepuzakojalivutixu.pdf
    • https://cdn.shopify.com/s/files/1/0432/2073/0011/files/daziruri.pdf
    • https://cdn.shopify.com/s/files/1/0441/0173/0456/files/93774471303.pdf
    • https://cdn.shopify.com/s/files/1/0430/2431/8618/files/kipewilewagojaf.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/62042090741.pdf
    • https://cdn.shopify.com/s/files/1/0433/3400/8987/files/32843034330.pdf
    • https://cdn.shopify.com/s/files/1/0446/6225/9865/files/paulk_workbench_2.pdf
    • https://cdn.shopify.com/s/files/1/0435/7577/1304/files/52829046164.pdf
    • https://cdn.shopify.com/s/files/1/0432/5851/1510/files/mcgraw_hill_ryerson_calculus_12_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0431/4988/5606/files/80003846072.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006718.bin
49be411a3b53c59de9acca38b7e9bf2e7f0fb5ca0a448bf2afd594a0fd752a5b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6718 5140 bytes
font_01_sfnt_off000078ac.bin
0ba1070d9767eb9cfff0aab48b8a1a9d07c055ccbd87899912fa69010822bbde		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78AC 15216 bytes
font_02_sfnt_off0000a86e.bin
9c057ac09ec7e90559246466cf17d5e2b4b033cefee822b4d3dac6bf26bbb550		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA86E 16088 bytes

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