Malicious PDF — malware analysis report

Static analysis result for SHA-256 968474e57e8e23d6…

MALICIOUS

PDF

46.9 KB Created: 2020-08-31 06:25:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0b3dc80db6d31a49d24634c0e371624b SHA-1: a03a1d15aca09c26e9f59930e70851ca605b33d6 SHA-256: 968474e57e8e23d6b4c846115b5981a475cba3bb416c9c80c94e700672da981e
152 Risk Score

Malware Insights

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

The PDF was flagged as malicious due to a critical heuristic identifying a link to known malicious redirector infrastructure. Additionally, a high number of links to other PDFs hosted on Shopify were found, indicating a potential link farm or SEO abuse. The ML classifier also strongly indicated maliciousness. The primary malicious IOC is the redirector URL.

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/wix?keyword=armas+silenciosas+para+guerras+tranq
    • https://cdn.shopify.com/s/files/1/0431/5981/4306/files/kitab_nasab_alawiyyin.pdf
    • https://cdn.shopify.com/s/files/1/0432/8180/9558/files/34659832250.pdf
    • https://cdn.shopify.com/s/files/1/0431/5109/8007/files/nih_consortium_contractual_arrangements_template.pdf
    • https://cdn.shopify.com/s/files/1/0435/8438/9275/files/tanozijukowurupixud.pdf
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/xulijudififug.pdf
    • https://cdn.shopify.com/s/files/1/0434/7287/9773/files/free_booklet_template.pdf
    • https://cdn.shopify.com/s/files/1/0433/9056/6556/files/xlsx_file_viewer.pdf
    • https://cdn.shopify.com/s/files/1/0462/3335/4389/files/bmp_adalah_format.pdf
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/supofazoriporidegimi.pdf
    • https://cdn.shopify.com/s/files/1/0434/9765/2376/files/anti_magic_academy_the_35th_test_platoon_light_novel.pdf
    • https://cdn.shopify.com/s/files/1/0429/1241/5907/files/tixonuruz.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_off00007660.bin
58376ff84d7179c17b55ac774476050f368cd5d21628886dbe2beaa02f1ba587		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7660 5368 bytes
font_01_sfnt_off0000887e.bin
7b466bb0eadc50a71e7611579f20a1c2a0ec9be7d7d06ac723f0450bd207c3ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x887E 11300 bytes

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