Malicious PDF — malware analysis report

Static analysis result for SHA-256 5150900f725afea4…

MALICIOUS

PDF

35.9 KB Created: 2020-08-20 10:32:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b5d87c2bcf9e22336becff02ff80c5af SHA-1: fbb3fd974fb4b153d18e57e188388fc491f7f653 SHA-256: 5150900f725afea428ace2e4db358773a11be824f2aade685f785b9990db3ec4
162 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=beyond+compare++softonic'. This suggests a phishing or social engineering attempt to redirect the user to a malicious site. The document also contains a large number of embedded links, flagged as a PDF link farm, with the primary domain being cdn.shopify.com. The ML classifier also strongly indicated maliciousness.

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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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=beyond+compare++softonic In PDF document text
    • http://files.skin-official.com/uploads/1/3/1/4/131409761/sudibamap_wuvomewesejoko_fesome.pdfIn PDF document text
    • http://fizaliko.janislynnecards.com/uploads/1/3/2/6/132695384/5602737.pdfIn PDF document text
    • http://bagis.mollymidi.com/uploads/1/3/1/6/131606758/4432515.pdfIn PDF document text
    • http://files.handfelted.com/uploads/1/3/2/3/132302894/kinipekelukipo-zerunixamorukat.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/1/0431/3631/9639/files/jaxusugizokuzevixu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3545/0774/files/sinavaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5393/0904/files/siwenowusunotetuvavenuka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0190/3264/files/b_tech_information_technology_salary_per_month.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5482/5621/files/learn_german_fast_and_easy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/57917948996.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6470/4662/files/metallica_enter_sandman_guitar_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1682/1672/files/p2p_magic_training_rs3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9480/9512/files/xisotexerutudepixidujaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0124/0992/files/kukozod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9245/7112/files/a_k_jain_physiology_book_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8981/1861/files/nowilupotefuzigerepibipaw.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

Related samples 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004a20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A20 5420 bytes
SHA-256: 626e05fa39f0e9ea4ebfc4ae5a9de5afe2c13b3a10adf6d52f9b1af0f4cba1fb
font_01_sfnt_off00005c79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C79 10744 bytes
SHA-256: 75dffa2292b06a94a27d2d331089c13d5470b964f5b03681aae86ba3c2f16033

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