Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5c97d447d190b19…

MALICIOUS

PDF

44.3 KB Created: 2020-08-18 20:29:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fad91c0e9e56158c6a47c1f3df3684e9 SHA-1: cbcca81e0dafe11dc1fab08814b5f51c0ebd1be2 SHA-256: d5c97d447d190b19d59404cb4511898453a606739c0ec261c2d23cd6f63c00b6
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link that redirects to known malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text related to 'free flyer templates microsoft powerpoint', suggesting a lure. The ML classifier also strongly flagged this PDF as malicious. The primary attack vector appears to be a malicious link designed to redirect users to harmful content.

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=free+flyer+templates+microsoft+powerpoint In PDF document text
    • http://falog.baieslings.com/uploads/1/3/1/6/131607131/e09659fe96.pdfIn PDF document text
    • http://files.utahenglishcreamgoldenretrievers.com/uploads/1/3/0/7/130740138/dozaduxaba.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/1/0435/1718/2104/files/bosaxewal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4143/8366/files/nefeka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vijob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2560/2472/files/sigisezugesofipajozojuzo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9925/0072/files/kosakuxumugofone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6251/8182/files/45553254645.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/8503/1576/files/java_web_services_tutorial_for_beginners.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8408/6429/files/basic_computer_knowledge_book_free_download.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 4

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_off000062c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62C2 5100 bytes
SHA-256: b5d26e547923c3737cdce1394eb995b190fbfd7513053240ffd6b1c22ae45b45
font_01_sfnt_off0000740b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x740B 9956 bytes
SHA-256: 4809c9c7842bcf0e5e8627731e9a78b414ed5c57c027d66a72364c9f5da8698c
font_02_sfnt_off00009625.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9625 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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