Malicious PDF — malware analysis report

Static analysis result for SHA-256 14d4de0cc74c89c3…

MALICIOUS

PDF

49.8 KB Created: 2020-07-30 16:00:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: da7cd0c339afdd856fab2991fc1ae6ad SHA-1: c352ca4030758b461c3436ec3d7d40ca0ff094a0 SHA-256: 14d4de0cc74c89c35166c353b4b27de03459878c2c9847fb405b13667a7b6a97
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains multiple embedded links and heuristics indicate it is a malicious redirector designed for SEO spam and phishing. The primary malicious URL, https://ttraff.ru/pify?keyword=bangla+comedy+sruti+natok+script+pdf, is used to lure users to potentially harmful content. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest an attempt to drive users to malicious infrastructure.

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.ru/pify?keyword=bangla+comedy+sruti+natok+script+pdf In PDF document text
    • http://files.fabuliciousteaching.com/uploads/1/3/0/9/130969080/nisuzojikukij.pdfIn PDF document text
    • http://files.ismsiliconvalley.org/uploads/1/3/1/3/131383924/3327115.pdfIn PDF document text
    • http://files.glenislaagainstturbines.com/uploads/1/3/1/6/131607827/ripulafovapi-pamosobavaduw-tizenexosebev-saduj.pdfIn PDF document text
    • http://files.aaadatacom.com/uploads/1/3/1/8/131871535/5be2dbdadd3e8f.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/1/0428/0611/6511/files/72716094242.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2490/7414/files/42265106583.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1461/7250/files/22456931201.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8787/1646/files/17351633481.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1146/5638/files/8083669485.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7139/6257/files/28671485839.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1338/1028/files/sodutatonobipanu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gefoviliruvowej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3758/7606/files/lavezimuvovikur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1128/4893/files/84620168623.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3532/8663/files/68245687195.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8358/6966/files/31419602060.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0020/9319/files/nuxuvuzefe.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://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000070c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70C7 5572 bytes
SHA-256: fbc740b4886fc8aedfb3ea8f98c6da5ffd1bc59418a41680326eaba511027391
font_01_sfnt_off000083a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83A2 5572 bytes
SHA-256: a8dda5b1872f0957a4ba3bb2e2de794fabd164ce0091d09f6d0edb7435b08921
font_02_sfnt_off000095ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95CA 10440 bytes
SHA-256: 7eb17d4767870ba474770e023374a6eac0b1b34c00ac2a24bc6744cc056ea927