Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd2d080b183411dd…

MALICIOUS

PDF

52.3 KB Created: 2020-08-09 01:02:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 38c6d1d085b04820f62c8fb210a0aca6 SHA-1: 289f59e0021d6061ac3729e028793f54e074000d SHA-256: dd2d080b183411dd4d148bac798800ee9ecc745c3fedbfb0a48153e0742ed561
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though partially corrupted, contains text related to academic topics and includes the primary malicious URL. The ML classifier strongly indicated maliciousness, and the overall structure suggests a link farm designed to redirect users to potentially harmful sites.

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=chapter+5+activity+based+costing+and+activity+based+management+pdf In PDF document text
    • http://bewuk.serenepierce.com/uploads/1/3/1/4/131482976/jesawo-jatoleribe-mejekigemelol.pdfIn PDF document text
    • http://files.corkgp.com/uploads/1/3/1/6/131637302/piwinijosij_kujunadiwov_tawaj.pdfIn PDF document text
    • http://files.pugetsoundfarmtables.com/uploads/1/3/0/7/130776055/8720153.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/1/0438/1127/4914/files/difference_between_rip_ospf_eigrp_and_bgp.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6859/6123/files/73832503587.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2468/5976/files/arcane_trickster_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3495/9259/files/kunuguvomovef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6579/4965/files/10282225155.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8191/5802/files/dabegolufexinevusad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vibamiwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9008/1944/files/xigubu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5467/7662/files/zagijubifexiwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9005/9157/files/vigotimobasoxujuzaxomow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6162/2437/files/ihk_koblenz_berichtsheft_vorlage.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 3

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_off00008bb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BB5 5868 bytes
SHA-256: 40a2567e9afcb1975eb422ee2d730bd13652d5c584906922d83ca577418110df
font_01_sfnt_off00009f8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F8F 10748 bytes
SHA-256: 362529d4475a51b7feaaf8beb492095f9a56c65088900a58669ed915337dde89

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