Malicious PDF — malware analysis report

Static analysis result for SHA-256 47e603038b0dc5c5…

MALICIOUS

PDF

35.8 KB Created: 2020-08-22 03:07:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0b2154314b4d001693d39f796e8e28f2 SHA-1: c43e90ff71003a21875746dcb8d931ddd1a7016e SHA-256: 47e603038b0dc5c59020a86f47a1e8274bf62be482fdf270407cd02a03849d07
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a malicious redirector link disguised as a driver download. The document body and embedded links point to various Shopify-hosted PDFs, likely part of a link farm to improve search engine ranking for malicious content. The primary malicious URL is https://ttraff.cc/pify?keyword=airtel+4g+wifi+dongle+driver, which is flagged as a known malicious redirector.

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=airtel+4g+wifi+dongle+driver
    • http://paxumo.thenesthudson.com/uploads/1/3/0/7/130776428/3456220.pdf
    • http://files.krististreatery.com/uploads/1/3/0/7/130776381/ee313bae.pdf
    • http://files.hawaiiplantationmuseum.org/uploads/1/3/0/7/130739163/6362064.pdf
    • http://files.lincolnbrady.com/uploads/1/3/1/4/131453198/naxofinumunenulari.pdf
    • http://tivamipi.hodgmanliterary.com/uploads/1/3/1/3/131383483/1d7567b35.pdf
    • https://cdn.shopify.com/s/files/1/0427/8734/0454/files/sumobawupadapurow.pdf
    • https://cdn.shopify.com/s/files/1/0434/2729/9478/files/48425532153.pdf
    • https://cdn.shopify.com/s/files/1/0434/0901/4934/files/81896630675.pdf
    • https://cdn.shopify.com/s/files/1/0434/5485/7369/files/order_of_operations_exercises_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0429/2168/9254/files/79104870625.pdf
    • https://cdn.shopify.com/s/files/1/0429/1251/4201/files/javepikapogog.pdf
    • https://cdn.shopify.com/s/files/1/0433/3400/8987/files/area_of_regular_polygon_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0437/6671/0433/files/21150057474.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004ed5.bin
6ae99819028d149c9c7cdf2dee75507c5fb905075c6e01b049ed722e4a676eab
pdf-font-stream PDF embedded font (sfnt) at offset 0x4ED5 4916 bytes
font_01_sfnt_off00005fbb.bin
98147cc5e5e90d3d619d0397cf403290d9fa9930d2c530ac6b625ff8185f259a
pdf-font-stream PDF embedded font (sfnt) at offset 0x5FBB 10252 bytes