Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bf158a1c1487be4…

MALICIOUS

PDF

35.8 KB Created: 2020-08-05 06:01:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 73666c9601445175466fe421c8ddfced SHA-1: ab6ca7449e69ec7c94dde44313cbe2ca36b32983 SHA-256: 5bf158a1c1487be4f9ca38fd025cfdcdfc91d6866dd4d24163998504556280c5
194 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector at 'https://ttraff.cc/pify?keyword=jurnal+bronkiektasis+pdf'. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to lure users to malicious infrastructure. The presence of a large number of external PDF links further indicates a link farm or phishing attempt.

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=jurnal+bronkiektasis+pdf In PDF document text
    • http://files.davidthornberry.com/uploads/1/3/0/7/130775952/635ab5d5f49.pdfIn PDF document text
    • http://files.betsyathorpe.com/uploads/1/3/0/7/130775102/vowawojebonum.pdfIn PDF document text
    • http://files.hanseatic-avs.de/uploads/1/3/1/0/131070845/dagomezinulopam_tidakox_vemobezezumedi.pdfIn PDF document text
    • http://files.karrathacaravanpark.com.au/uploads/1/3/0/9/130969364/d149b0.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/1/0434/5344/8358/files/ziranatowadujikonabeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/gapolezobemoviron.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9656/4131/files/42480730878.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4681/3344/files/bioethics_a_nursing_perspective.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8179/3698/files/33798377184.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0020/8294/files/jenil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0009/4112/files/43386308483.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6839/9524/files/42183866571.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2317/0710/files/python_list_append.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/wurumi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/75609531209.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2746/3324/files/tatuvavuzex.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_off00004e4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E4A 5228 bytes
SHA-256: 43f030a691dd0cf5cfc7fc110586cb9144dadf4f716e61c8236d8d65d6732525
font_01_sfnt_off0000601e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x601E 10056 bytes
SHA-256: 2a80ce191c05daa5214eb165d16d70416589978050ff6e4a78433b815fc55285

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