Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cd9b48225c5779c…

MALICIOUS

PDF

55.5 KB Created: 2020-08-31 06:11:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bf08ee3ce82218973423c4222f691c7c SHA-1: 88e3aa8e8db4e9bccf28e7de66964b5ae6283352 SHA-256: 2cd9b48225c5779cf8c3a61e76c96662f309599027bde830c3f5d5e63ed4282e
242 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body text and heuristic firings indicate a lure related to 'Aadhar card download' and MFA/one-time-code harvesting, suggesting a phishing attempt. The presence of numerous links, many hosted on Shopify, points to a link farm strategy to obscure the malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • 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.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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/wix?keyword=aadhar+card+download+with+aadhaar+number+online In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3572/8794/files/kisexanuvata.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30551251375.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9314/8313/files/zero_suit_samus_wallpaper.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7068/4317/files/xizanokikonisujos.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_823f16bd4e6a43ed96410974cb865342.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/ac72e0_5239c0b48f9d4b3aa237fc17ecfdaf35.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_6121099b4b3845219d4bbc06114877e3.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/e7e4a0_ace8d088f7bf47a698607146a747d800.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2914/2426/files/lerupituxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4856/6933/files/20911008583.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2285/9943/files/34108065166.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7351/9269/files/cdl_tanker_practice_test.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006fa0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FA0 5220 bytes
SHA-256: f063791d249c7d5760781a4ea6d2d1522b428f915bc0876707a24acbc94477d4
font_01_sfnt_off00008139.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8139 9936 bytes
SHA-256: 07484e3568ab3f45a35417bd651bd44e04557558ce43d5cb0f13af1ee7b66139
font_02_sfnt_off0000a377.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA377 16144 bytes
SHA-256: 18f56b7fae04e07bc119a468ad323bdda099da77b0772854d1c47cc1f39b9f3b
font_03_sfnt_off0000b8b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB8B3 5864 bytes
SHA-256: f130b94648e3eff7c6f311dede1a14f6161b073412caf7ce0f967e220e2ce064