Malicious PDF — malware analysis report

Static analysis result for SHA-256 1036a236a2c8bada…

MALICIOUS

PDF

48.7 KB Created: 2020-08-05 03:01:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 956e231ac999a9247acf37de1eb8f10d SHA-1: a56f818f9d3477a752bb899f6bc40f3851deaf71 SHA-256: 1036a236a2c8bada3333c7fe067417f241962b0f8d13ee104222df7a788a7c05
194 Risk Score

Malware Insights

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

This PDF document contains numerous links designed to create a link farm, with a primary redirector pointing to malicious infrastructure. The document body, though heavily obfuscated, contains references to the redirector URL and other benign-looking PDF links, likely to mask the malicious intent. The ML classifier strongly indicates maliciousness, and the presence of redirector links suggests an attempt to lure users to potentially harmful content.

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=bonjour+tristesse+english+translation+pdf In PDF document text
    • http://files.dogloverspetservicesut.com/uploads/1/3/0/8/130814706/9798833.pdfIn PDF document text
    • http://files.bluelotushypno.com/uploads/1/3/2/6/132696063/ruwilelidexekoke.pdfIn PDF document text
    • http://files.paraglidinginkorea.com/uploads/1/3/1/0/131070498/raxazexebogug.pdfIn PDF document text
    • http://files.regencyparkcary.com/uploads/1/3/1/4/131454270/8102637.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/1/0434/2707/0104/files/unmount_sd_card.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/6248/0296/files/beyond_compare_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3957/1616/files/books_should_be_free_kodi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8581/4173/files/82866010461.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1100/4821/files/warhammer_40k_space_wolves_codex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9073/0405/files/nevakagikivekipekurugaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8689/5512/files/17994120959.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2026/3322/files/25983040691.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6170/5890/files/90467025154.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7133/2767/files/naruto_shippuden_episode_77_english_dubbed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/4645/8776/files/gafezuwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3853/9927/files/22297222293.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007172.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7172 5308 bytes
SHA-256: e9910cd61f8208180b1047e2c633fdd34350590f67e70a1df6129f1a4e13e26f
font_01_sfnt_off0000837c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x837C 10504 bytes
SHA-256: 0a8fc41dba098162bb347a21f423b21431e6d32b338a493880a67664997ccd3c
font_02_sfnt_off0000a71f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA71F 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176