Malicious PDF — malware analysis report

Static analysis result for SHA-256 70f6f0366c440544…

MALICIOUS

PDF

42.7 KB Created: 2020-08-25 12:21:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c652fbffac8582e970e71493be75bf96 SHA-1: 9bea0e79ad9ab9716e519b5ddd35d703f8255d95 SHA-256: 70f6f0366c4405443fc8be343f65c799ca561ef661ef2aabf629ffc2943fda6d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating malicious redirector links and a link farm, suggesting an attempt to drive traffic to malicious infrastructure. The embedded URL and the document body both point to a redirector URL, likely for phishing or malware distribution. The ML classifier also strongly flagged this PDF as malicious.

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.com/pify?keyword=first+day+of+kindergarten+sheet In PDF document text
    • http://files.nonstopinterior.com/uploads/1/3/1/4/131453592/konatasuso-vipaze.pdfIn PDF document text
    • http://files.scottiesrockfoundation.org/uploads/1/3/2/8/132816036/ganolotimexux.pdfIn PDF document text
    • http://files.wagssports.com/uploads/1/3/1/8/131856173/dd5a0d33ce.pdfIn PDF document text
    • http://files.highlightminiatures.com/uploads/1/3/0/8/130874121/1259835.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/1/0434/7818/8198/files/situdosudofodiwaxili.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0118/3384/files/movies_sites_in_hd_free_telugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3536/1442/files/sawagamotunabuzagisexi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/6724/8535/files/vehicle_aerodynamics_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0252/5856/files/adaptive_control_astrom_wittenmark.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1987/7024/files/14443493897.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5700/5222/files/fofibezavewulufisan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4490/5884/files/29886048536.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4380/5594/files/hemifacial_spasm_treatment.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8580/0358/files/gafuto.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 2

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_off00005c65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C65 5044 bytes
SHA-256: 1e7df9b28864d9531ee7f88f6179a32ef0e5f768e54b0f85d380f05d4613f3f3
font_01_sfnt_off00006d8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D8F 10024 bytes
SHA-256: 509f87a103398d006116ae0a948475e46557f1b56ec585b544b4df48f63e70ba
font_02_sfnt_off00008fe6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FE6 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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