Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1da1eedbb99d648…

MALICIOUS

PDF

45.7 KB Created: 2020-08-15 01:08:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 9204f9ed167ffe2987c4edf1fde2a8f6 SHA-1: 65f72fd573df3b3f2caa649b040149538a716b09 SHA-256: f1da1eedbb99d6485d18d5216ecec387ed47bc1ad14426c53c7aa1c0539129e7
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of these links, 'https://ttraff.ru/wb?keyword=lokakarya%20mini%20puskesmas%20adalah%20pdf', is identified as a malicious redirector. This suggests the document is designed to lure users to malicious infrastructure, likely for further exploitation or phishing. No scripts were extracted, limiting the analysis of direct execution capabilities.

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/wb?keyword=lokakarya%20mini%20puskesmas%20adalah%20pdf In PDF document text
    • http://nedorid.rlbciviccenter.com/uploads/1/3/1/4/131437812/131212.pdfIn PDF document text
    • http://files.audiostak.com/uploads/1/3/0/9/130969340/fateluxoparitozafefi.pdfIn PDF document text
    • http://bitofoge.estudiosdelaescritura.org/uploads/1/3/1/6/131606060/sibobinatufogadi.pdfIn PDF document text
    • http://tipom.hamiltonpotterytools.co.nz/uploads/1/3/0/8/130873851/6958390.pdfIn PDF document text
    • http://jirunej.lindsaywincherauk.com/uploads/1/3/1/3/131398097/gopabex.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/1/0436/7712/2713/files/mivelulufowunagadeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7246/0702/files/andhra_pradesh_tourist_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9917/5579/files/how_to_play_computer_audio_through_discord.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9311/2472/files/bupixifoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1149/7366/files/tunafupe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6081/2189/files/coulomb_gauge_transformation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13977314479.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mekokagowofulagifofid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2690/6264/files/bangla_to_english_translation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8719/9394/files/16124236395.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vuwunojipodaga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1573/9304/files/kriteria_sepsis_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7526/3909/files/loxebuwepipaxoxideliwesos.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_off00006779.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6779 5188 bytes
SHA-256: eab62ffb3a7220fa32e1ea7138eff4e4da8e2b2833b28da65760b16d933b5146
font_01_sfnt_off000078ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78EF 10124 bytes
SHA-256: ffc8cd226e7acde110cd469e6e79754a6fb00355690d411eae1810f4761f61a3
font_02_sfnt_off00009b81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B81 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333