Malicious PDF — malware analysis report

Static analysis result for SHA-256 11411c2bce4b41e0…

MALICIOUS

PDF

122.3 KB Created: 2020-08-09 20:22:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: acbea0eba57e7af28112eb00c174c952 SHA-1: 353f4397c8c5d47750c7d15197fcebbcd57f1097 SHA-256: 11411c2bce4b41e0cf5c967b91e7907c04e68a3f3f9936ee3efb3c33e759d636
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.ru) disguised as a "free download" lure. The ML classifier strongly indicates maliciousness, and the presence of numerous external links suggests an attempt to drive traffic to malicious or deceptive content. No scripts were extracted, but the PDF structure itself facilitates the attack.

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=tales+of+the+arabian+nights+book+of+tales+pdf In PDF document text
    • http://geban.writerswhorun.com/uploads/1/3/0/7/130739415/dizifilujilif.pdfIn PDF document text
    • http://files.rugbysafetynetwork.org/uploads/1/3/1/4/131452976/7341884.pdfIn PDF document text
    • http://tevovub.johnscothist.com/uploads/1/3/2/7/132740892/jisukidurujive_midugojizo_muvanojugili.pdfIn PDF document text
    • http://files.medesignusc.com/uploads/1/3/1/4/131452826/nezoru_ranuzekekoni.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/1/0429/1434/9219/files/python_progress_bar_console.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3810/5000/files/bawilogorugil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7046/2883/files/mijafo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4314/4355/files/rileferubitumapesulinepub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7932/7141/files/sudo_without_password.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0643/5232/files/jimelifuxafesisafewenape.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4016/9384/files/lugasozupatokejaralepidid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0595/9574/files/jorademo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5670/1348/files/73248938605.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6628/5464/files/synthesis_of_benzanilide_from_aniline.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3486/1991/files/moloridarenisuweka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2081/2441/files/wtyn_j_edm.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1741/8405/files/3868506023.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off0001aec9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1AEC9 25028 bytes
SHA-256: 2ee5e7a0220a224e53afeb752e746fce77e54e0b04616a868b489f550893fece
font_00_sfnt_off00017443.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17443 5456 bytes
SHA-256: afc4164942c40f2d8c06336fb10d453f885464a2b9dd367f17a17501e8e84445
font_01_sfnt_off000186c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x186C1 12432 bytes
SHA-256: a724172b6aeaad9b63eb4cdb36163dd8d34861186e52d5b036aa40e6d7180da4