Malicious PDF — malware analysis report

Static analysis result for SHA-256 1daad8bd5a46f07d…

MALICIOUS

PDF

43.6 KB Created: 2020-08-23 07:04:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 22bc6b1c5a7861b43f784a406e58a444 SHA-1: 2bbe1b9008f51851e84ece6a13209d49780f2322 SHA-256: 1daad8bd5a46f07d260af204c68d5f9af0124f4083ff31dc1adbf5bb6219feaf
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a link farm and a redirector link disguised as an Android application download. The document body text, though heavily corrupted, contains references to 'Android messages 2.9 apk' and embedded URLs, reinforcing the lure. The primary malicious URL is 'https://ttraff.ru/pify?keyword=android+messages+2.+9+apk', which likely serves as a gateway to further malicious content. The presence of numerous links to external PDFs, many hosted on Shopify, suggests a tactic to manipulate search engine results or distribute payloads.

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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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=android+messages+2.+9+apk In PDF document text
    • http://pebule.championcleaning.net/uploads/1/3/1/3/131382134/8272b4cb409.pdfIn PDF document text
    • http://files.dlogiceu.com/uploads/1/3/0/9/130969710/motalixigi.pdfIn PDF document text
    • http://files.mentororchestra.com/uploads/1/3/1/4/131484395/mabemejabo-xolamo.pdfIn PDF document text
    • http://files.marriedmarks.com/uploads/1/3/2/8/132816158/wawezanuz-titun-resuta-ponupax.pdfIn PDF document text
    • http://buzako.cannabamacbd.com/uploads/1/3/1/4/131483418/9057953.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/1/0438/9208/0795/files/tafixilesesesuzumixojonex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1915/8183/files/givixe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3600/0931/files/fewenapetezenewipuboj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/0249/8970/files/audiobook_application_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7580/6119/files/definition_automate_programmable.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1910/7480/files/81439912612.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0904/7708/files/black_s_law_dictionary_4th_edition_unabridged.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7764/0093/files/tovifumukupazen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8660/1626/files/the_south_african_constitution.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/tekikukada.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7554/3964/files/naroguza.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005fb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FB9 5620 bytes
SHA-256: 32dd4ca5ef40e381645cd9da5884b72ef7bce42fda59d6c3bfbab5a0d0aadbb5
font_01_sfnt_off000072cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72CB 15028 bytes
SHA-256: 940a98c374d016d8307f4a969e5b5dd62ebfb5eb7b60a5c844fe40cac995092e