Malicious PDF — malware analysis report

Static analysis result for SHA-256 507aacefbfaa5bba…

MALICIOUS

PDF

48.3 KB Created: 2020-08-19 23:24:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 70624ad36cee676245f684af7b918a77 SHA-1: df4a02dc761469a51f286ac325196b63052edac4 SHA-256: 507aacefbfaa5bbae2e28855d3a3e70029cbca0e9dc34ae56876ac7628f5d301
194 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with a critical heuristic firing indicating a malicious redirector. The document body, though heavily obfuscated, contains text related to splitting PDFs and references the malicious URL. The primary attack vector appears to be a lure to a malicious redirector, likely for further payload delivery or phishing.

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.cc/pify?keyword=diviser+pdf+en+plusieurs+pages In PDF document text
    • http://files.sarahwisemanphotography.com/uploads/1/3/2/6/132681392/ziviv-jemorad-merufot-rikofemufovub.pdfIn PDF document text
    • http://files.kathrynemyoung.com/uploads/1/3/1/0/131071076/porewuvofadaxa.pdfIn PDF document text
    • http://files.jasmafusioncuisine.com/uploads/1/3/1/0/131071256/7f66ac23c73b19f.pdfIn PDF document text
    • http://files.manart1969.com/uploads/1/3/0/7/130740561/5135313.pdfIn PDF document text
    • http://gajex.magicbrushpottery.com/uploads/1/3/1/3/131378991/gagadivu.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/1/0432/1011/3186/files/cubic_regression_calculator.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3888/3495/files/tekelitudarirumeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5486/6333/files/endnote_x4_free_for_windows_7.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3316/5986/files/51269733111.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0610/7552/files/stardew_large_egg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4145/5254/files/gazezodexad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1313/4757/files/76881120057.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7259/2801/files/disaluzokudogenonazon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0671/3253/files/60967630872.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7282/9078/files/jingles_bait_and_tackle_fishing_report.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007a56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A56 5268 bytes
SHA-256: 92241dd1070be626a693cf590f290f481f95ef25816d16a0b974a1ba80adf970
font_01_sfnt_off00008c58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C58 12268 bytes
SHA-256: 58f1f212d0e36c3c4b0cb0fd8dd6353f4540b18915b9095919f83c3c9159f7bd

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