Malicious PDF — malware analysis report

Static analysis result for SHA-256 4882593208320e6f…

MALICIOUS

PDF

45.3 KB Created: 2020-08-07 13:23:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f3e063f776c1ef048a199f1fc0b8e8da SHA-1: fc2ff5d3652d57833350e0a624c15773e1761be1 SHA-256: 4882593208320e6fe724690d451e638893fbbbf9cb24a70ff357767aab08a7eb
202 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as an HDFC bank pay slip, which is a common lure for phishing or malware delivery. The document body and embedded link structure indicate a deliberate attempt to host numerous links, likely to obscure the final malicious destination. The primary malicious IOC is the redirector URL: https://ttraff.ru/wb?keyword=hdfc%20bank%20pay%20slip%20pdf.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wb?keyword=hdfc%20bank%20pay%20slip%20pdf In PDF document text
    • http://files.franksrockyhill.com/uploads/1/3/1/4/131437363/2301299.pdfIn PDF document text
    • http://files.wildrootsskinbody.com/uploads/1/3/1/4/131437822/zajasolamo_nadekosufun_botoka_xepagokivo.pdfIn PDF document text
    • http://files.kim-bella.com/uploads/1/3/1/3/131380786/ef9375b8.pdfIn PDF document text
    • http://files.lakewoodmanor.ca/uploads/1/3/0/8/130874668/guzevi-gepitapu.pdfIn PDF document text
    • http://files.ecrcme.com/uploads/1/3/1/3/131380889/95b954b848c1ad.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/1/0435/2868/3672/files/jejuki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3240/4380/files/fimilu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6122/2307/files/sylvester_stallone_nude.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6915/2163/files/javascript_iterate_over_object.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5809/4495/files/97473863637.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3507/4465/files/34982600514.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8398/7096/files/19720163145.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7330/5762/files/14992791309.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0378/8959/files/js_empty_function.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6668/7642/files/tuzijudamabuduvepafew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/niwaragevutaxesidep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9655/6191/files/kagefimeziruti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7708/4070/files/luladig.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D27 5320 bytes
SHA-256: 113566204fc67a71156487544e1fa82eb1ecf70f121514a64487ed7d3c6ae228
font_01_sfnt_off00006f5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F5C 10248 bytes
SHA-256: 067aa3694d2a0b32c2802d7b27d2cb5ac25a7c8ea4edaf047e7c1b9da7093ca7
font_02_sfnt_off000092b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92B6 16164 bytes
SHA-256: ebd2804bff382343e08f6a42dc45f69f4e794c08b23908ae60ba78ededae74b1