Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7d3866cce906f83…

MALICIOUS

PDF

45.7 KB Created: 2020-08-09 17:14:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fe5891435d50ef3af19b3d3406448e77 SHA-1: 4605eb4cf19c43cdd334c21d15bec8bad9a5bc48 SHA-256: c7d3866cce906f837448106e8f27ab92a8d9735b9961dfd87c072fff6b8a1b33
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically 'https://ttraff.cc/pify?keyword=autodesk+fusion+360+tutorial+pdf+ita'. This indicates the document is designed to redirect users to malicious infrastructure. Additionally, the PDF exhibits characteristics of a link farm, embedding numerous external links, many of which point to Shopify domains. The document body, though heavily obfuscated, contains references to the redirector URL and other external links, reinforcing the lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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=autodesk+fusion+360+tutorial+pdf+ita In PDF document text
    • http://files.whispersofthedarkmoon.net/uploads/1/3/0/8/130814058/8313925.pdfIn PDF document text
    • http://files.slievenamonnurseries.com/uploads/1/3/0/7/130739398/9a0f0b0a043fc90.pdfIn PDF document text
    • http://zanezidit.katlynbackus.com/uploads/1/3/0/8/130814124/ab184.pdfIn PDF document text
    • http://files.lottiecreates.co.uk/uploads/1/3/1/3/131381237/sewolefavareji.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2526/7877/files/university_at_albany_campus_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2021/4681/files/98457757408.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9523/6513/files/learning_drawing_and_painting.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2040/3356/files/38438870342.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6204/8421/files/femutedotobugemega.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8493/8402/files/33602556251.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7213/5074/files/wugijemufarofujimorulub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0656/6306/files/firaxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7265/1413/files/catlogo_suvinil_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9722/6402/files/kapulomiparewiloranosebu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8339/8310/files/aggregate_test.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1725/4565/files/the_analytics_edge_bertsimas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4519/9767/files/96577530175.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E3E 4032 bytes
SHA-256: 51036caeaaec89de8680405f123e86dc84267b6fe8b2de34ea0e6c667ded1fe3
font_01_sfnt_off00006cb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CB0 5548 bytes
SHA-256: 693e64030726394d8f95fe15626148e8270aa1a18ff07b5532177ac7b6d7fb95
font_02_sfnt_off00007f99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F99 13460 bytes
SHA-256: 2026f514133cb2b2c988342d6b0ca989680efc44623501a8d77b7e9a140e6164