Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5655d1f1176d504…

MALICIOUS

PDF

44.6 KB Created: 2020-08-17 04:52:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: da1bce48912da1feadbba1d4e754cdbc SHA-1: 55e272a3d099b9bbc97940bec92eca99ca54465c SHA-256: f5655d1f1176d504579c3eed1a0d592c5308840a6452fd91b2210887e7ebb9eb
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with a critical heuristic firing indicating a link to a known malicious redirector. The document body, though heavily obfuscated, contains the same redirector URL. This suggests the PDF is designed to lure users to malicious content through a chain of redirects, likely for phishing or malware distribution.

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=chhath+puja+song+2019+free In PDF document text
    • http://files.elizabethcopeland.ca/uploads/1/3/1/4/131454024/dijiru.pdfIn PDF document text
    • http://vepiwarex.bullmastiffregisterofmerit.com/uploads/1/3/2/6/132681333/rivog.pdfIn PDF document text
    • http://files.rebeccameidinger.com/uploads/1/3/1/4/131437750/6744549.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9925/1093/files/5226264768.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3956/2651/files/bijokugasuboxezurojenowuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9568/7328/files/guwanatejutanojoxasanonik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5121/9104/files/10816220874.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7138/0383/files/boston_university_ap_credit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2826/6654/files/old_tinkle_digest.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0790/9781/files/jogaxasupunorevamali.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9578/5629/files/rarifegogilafaxeni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8476/7641/files/valedezuxokigalilu.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

Related samples 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006069.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6069 5548 bytes
SHA-256: 7d9219a9bfe382581c86349de3b8623fd626b91a06b176223ff0a95d902ae94a
font_01_sfnt_off0000734e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x734E 10756 bytes
SHA-256: 6578d7bb920d4935a6c77d9a6b12ab05c08f956b22f7eab2409ae38ca1c77038
font_02_sfnt_off000097f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97F7 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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