Malicious PDF — malware analysis report

Static analysis result for SHA-256 19ac15342c8ae00f…

MALICIOUS

PDF

55.3 KB Created: 2020-08-05 01:23:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5cef95cfec1e1bde584413bea73d61c4 SHA-1: 06953265f35d43197b66fde1fde38fc97236d3da SHA-256: 19ac15342c8ae00f5cdfdbd20a4389be10a667672677428ef9af5bb79cd1121a
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to a redirector service (ttraff.ru) which is flagged as malicious. The document body, though heavily obfuscated, contains the malicious URL and references to other PDF files hosted on benign platforms like Shopify, suggesting a link farm or SEO poisoning tactic. The ML classifier strongly indicates maliciousness, and the overall structure points to a lure for phishing or malware delivery.

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=pan+enteral+adalah+pdf In PDF document text
    • http://files.pascalab.org/uploads/1/3/2/7/132740541/sutenamurot.pdfIn PDF document text
    • http://files.shanereidcontracting.com/uploads/1/3/1/0/131069763/tezatuvevik.pdfIn PDF document text
    • http://xorovu.inlandempireinjurylaw.com/uploads/1/3/0/9/130969045/1175874.pdfIn PDF document text
    • http://files.ssjohnpaulfaithformation.org/uploads/1/3/0/9/130969820/biwitakanavow.pdfIn PDF document text
    • http://wevek.tamarawolfson.com/uploads/1/3/1/4/131453494/7262258.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6576/1176/files/zobuzavepikorutogup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5552/0667/files/80817375434.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8362/0757/files/54017561398.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3161/6923/files/41094940945.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6286/0699/files/genozov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7606/6207/files/43321945681.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5720/8731/files/zajesu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8572/5857/files/craigslist_org_el_paso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8054/0575/files/puvowujajibatafex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9147/6133/files/duzid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6644/1376/files/dodufugozofiwujofakofeme.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7146/3831/files/vekisikokozo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2852/7776/files/laxotozunin.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.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000080cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80CD 4952 bytes
SHA-256: 6106ba75a70c4deff08acd2bf1f695cf468ca605645b215ffdb3666cdacd63ee
font_01_sfnt_off00009191.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9191 9000 bytes
SHA-256: 1744a406d07f61e2a6be067382520157b6ff5c89f283dcf3ad2af83208d8f76c
font_02_sfnt_off0000aacb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAACB 10272 bytes
SHA-256: 59aecc34237f025ebe01092175f2c649b1e59d05487ca4be7af6ddebe747decf