Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fb03a5e91fa9502…

MALICIOUS

PDF

43.7 KB Created: 2020-08-13 02:31:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e4b740b25f595894c2479460dea61932 SHA-1: 795dd21633c2cf8ce15f7892301658cac3f64e4f SHA-256: 1fb03a5e91fa9502e3348f663f0fd4c8f5849e22edb02d9477019ed47b635e3b
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a link that redirects to a known malicious domain, likely as part of a phishing or scam campaign. The document body text, though partially corrupted, includes the target URL and appears to be a lure for search engine traffic. The presence of numerous external links, many pointing to Shopify domains hosting PDF files, suggests a link farm or SEO manipulation tactic to distribute malicious content. The ML classifier strongly indicated maliciousness.

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.ru/pify?keyword=nitric+acid+msds+sigma+aldrich+pdf
    • http://files.southmountainheritage.org/uploads/1/3/1/4/131437143/6122240.pdf
    • http://mavusexux.thebackpackgirl.com/uploads/1/3/2/7/132710621/1307112.pdf
    • http://sejesu.alamodekabashsewingshop.com/uploads/1/3/0/7/130740049/guviruge-nuzug-xatere.pdf
    • http://files.brewerstreetfarmhouse-weddings.co.uk/uploads/1/3/1/3/131381985/mulugumonefori_sovevuni.pdf
    • http://pepin.rs401k.com/uploads/1/3/1/3/131398140/bagapafedeb.pdf
    • https://cdn.shopify.com/s/files/1/0428/1889/6038/files/gatikokowo.pdf
    • https://cdn.shopify.com/s/files/1/0436/3947/2288/files/icao_aerodrome_design_manual_part_2.pdf
    • https://cdn.shopify.com/s/files/1/0430/9932/4567/files/xopisipapan.pdf
    • https://cdn.shopify.com/s/files/1/0430/7881/1810/files/animal_farm_test_review.pdf
    • https://cdn.shopify.com/s/files/1/0431/5129/4619/files/gumukagelura.pdf
    • https://cdn.shopify.com/s/files/1/0438/7107/6520/files/niwufiwafazumano.pdf
    • https://cdn.shopify.com/s/files/1/0433/2273/6798/files/80077616488.pdf
    • https://cdn.shopify.com/s/files/1/0435/9343/3246/files/pixelmon_hard_stone.pdf
    • https://cdn.shopify.com/s/files/1/0434/1560/1314/files/98740645003.pdf
    • https://cdn.shopify.com/s/files/1/0430/6986/6133/files/23073199866.pdf
    • https://cdn.shopify.com/s/files/1/0430/6485/2634/files/larogaxafosanuv.pdf
    • https://cdn.shopify.com/s/files/1/0448/3593/0273/files/absorbancia_corregida.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_off00006c7b.bin
5527fe22f756b914331a9cc00c0f8eaabf9691b6e4e7e418a5aeff0c6c3effaa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C7B 5536 bytes
font_01_sfnt_off00007f2b.bin
ba33da4372815bb241755c90c77154791414d97da515e720ebcced2035c8209b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F2B 10104 bytes

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