Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a93d1ad77880cd2…

MALICIOUS

PDF

60.2 KB Created: 2020-07-29 13:05:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c340bff0f94a882837e0a9e5c69560d2 SHA-1: f92bb22edf0b7fd17bdab61f40d58a00698e59b4 SHA-256: 0a93d1ad77880cd2dccf9f86a805926416c12c8dcdeb291c58a6a12757391630
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.cc, which is likely used to obscure the final destination of the malicious payload. The document also hosts a large number of external PDF links, suggesting a link farm or SEO manipulation tactic. The ML classifier strongly indicates maliciousness, and the presence of embedded URLs further supports a malicious intent to redirect the user to harmful 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.cc/pify?keyword=medicinal+plants+and+herbs+pdf
    • http://files.chest-messages.com/uploads/1/3/1/8/131857284/7831597.pdf
    • http://files.spiritfirstcoaching.com/uploads/1/3/1/8/131856224/e40e0c.pdf
    • http://files.tallsycamorecampground.com/uploads/1/3/0/7/130740213/zajafi-pakanawaluzotem-nikunija.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/0742/7238/files/nabuwekigigijukuregeto.pdf
    • https://cdn.shopify.com/s/files/1/0433/6926/7354/files/6644711421.pdf
    • https://cdn.shopify.com/s/files/1/0435/7675/4344/files/gigazu.pdf
    • https://cdn.shopify.com/s/files/1/0430/1901/0201/files/88278128729.pdf
    • https://cdn.shopify.com/s/files/1/0428/1185/0918/files/48933729229.pdf
    • https://cdn.shopify.com/s/files/1/0434/9332/7008/files/90657908469.pdf
    • https://cdn.shopify.com/s/files/1/0430/7448/6421/files/rawupuborilef.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/37629755229.pdf
    • https://cdn.shopify.com/s/files/1/0431/7796/7778/files/zabodejijeduxufetotuvoz.pdf
    • https://cdn.shopify.com/s/files/1/0433/9168/0666/files/jalaxifum.pdf
    • https://cdn.shopify.com/s/files/1/0434/6678/4932/files/pifipotumaviwilikawoxare.pdf
    • https://cdn.shopify.com/s/files/1/0433/8640/5022/files/ragesasemesebafagikox.pdf
    • https://cdn.shopify.com/s/files/1/0438/0252/5856/files/769425304.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_off0000b017.bin
35ac427ef3cf97d4921f052046207496df74e7217f39905c74dc700ae27e7f61		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB017 5064 bytes
font_01_sfnt_off0000c130.bin
9bf186b74579db04a8966d59e3b244c20a78ff9ec5665b98b64dc3f2a365e069		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC130 10052 bytes

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