Malicious PDF — malware analysis report

Static analysis result for SHA-256 6532ac156085d12f…

MALICIOUS

PDF

46.8 KB Created: 2020-08-20 04:18:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4a705cfc5e586faecdece64a64d0ecb2 SHA-1: 39fead2343ce7906d0c22e4be69840176b3a36a1 SHA-256: 6532ac156085d12f0ed0a56fd9a4c3dabd1b959a006367c2a82dac2b2e8b81d9
202 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, many of which are hosted on Shopify but point to a redirector infrastructure. The primary redirector URL, 'https://ttraff.cc/pify?keyword=epistaxis+anterior+y+posterior+pdf', is flagged as malicious and associated with SEO link farms and free download phishing lures. The ML classifier strongly indicates maliciousness, and the presence of urgency language further supports a phishing or malware distribution attempt.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.cc/pify?keyword=epistaxis+anterior+y+posterior+pdf In PDF document text
    • http://files.360pro.be/uploads/1/3/0/7/130776120/nuponek.pdfIn PDF document text
    • http://fazazodu.lumenctr.org/uploads/1/3/2/7/132740214/rebeg.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/1/0438/0885/0081/files/auld_lang_syne_piano_easy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0623/8613/files/29001226796.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8833/9354/files/remote_desktop_port_number.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0645/9032/files/single_stage_centrifugal_pump_experiment.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2317/9677/files/biblical_hebrew_study_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5530/0249/files/37754115234.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1927/9259/files/90057092439.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8521/7436/files/wordly_wise_book_7_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9616/0921/files/flat_head_sheet_metal_screws.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_off00007a45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A45 5132 bytes
SHA-256: 7b40bb9252d24a545230eb9864b2e39280240fd874247de3f4ab95d9478099dc
font_01_sfnt_off00008bd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BD1 10188 bytes
SHA-256: 0990268625daa2eece84410ddaa25bd0199a5e0e2276e474218daff321085a95