Malicious PDF — malware analysis report

Static analysis result for SHA-256 71da58e1d1f433eb…

MALICIOUS

PDF

46.6 KB Created: 2020-08-14 19:15:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cc1471ca71ca1cdd6afcc74c29a25adb SHA-1: aeadc79fb8ee99c9b2d66fd023964984f155253b SHA-256: 71da58e1d1f433ebed6b2a57cbf5c6d3205bed36d51f0a3e11f8730b3154e4cc
194 Risk Score

Malware Insights

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

The PDF contains a link to a redirector URL that is flagged as malicious and part of a link farm. The document body, though heavily obfuscated, contains text related to 'Age of empire 3 mobile java apk' and a URL that appears to be a lure for a free download. This suggests a phishing attempt to redirect users to malicious infrastructure.

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=age+of+empire+3+mobile+java+apk In PDF document text
    • http://files.singersandactorsworkshop.com/uploads/1/3/2/7/132740218/mubazaxumadajag.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/1/0432/2259/7796/files/bepuvewumiminibekewi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9422/8630/files/38829427897.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6688/4250/files/vatataguxuripanesi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9359/0177/files/4361262043.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8044/1238/files/stardew_valley_planting_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0889/0792/files/66281025537.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9902/1717/files/sozezedifekoxobalufaxave.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0369/8600/files/basic_tactics_for_listening_third_edition_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5442/3464/files/way_of_the_open_hand_5e.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6984/8217/files/alfonso_lopez_quintas.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 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ac2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AC2 5140 bytes
SHA-256: e703d3649545d395a6a58238c4d2f285e7e405d592728e141ab2b809819d1705
font_01_sfnt_off00006c4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C4B 17008 bytes
SHA-256: 2d82a9bfb804a888b7edadeb72f01d391e92993bf40e00897907719acafd6f2b
font_02_sfnt_off00009dd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9DD7 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

Open this report in the interactive analyzer, or submit your own file for analysis.