Malicious PDF — malware analysis report

Static analysis result for SHA-256 b628dd49060a6b13…

MALICIOUS

PDF

46.2 KB Created: 2020-08-14 01:31:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dbd834023b35d6cc7bcded20e8dbfbc3 SHA-1: c56547ab6b360ec218e67cc7539e3d3ee9a2e5da SHA-256: b628dd49060a6b13b64811528f901a0ca7909a18538711d429d8c9e9b3c6925c
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one specifically pointing to a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document body, though partially corrupted, contains the URL 'https://ttraff.ru/pify?keyword=architecting+with+google+cloud+platform+exam', which is also listed as a malicious redirector. This suggests the primary purpose is to lure users to malicious 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.ru/pify?keyword=architecting+with+google+cloud+platform+exam In PDF document text
    • http://dokipur.galateeagallery.com/uploads/1/3/0/8/130874359/1297708.pdfIn PDF document text
    • http://files.georgianavs.com/uploads/1/3/0/7/130776218/1046117.pdfIn PDF document text
    • http://files.just-beecause.com/uploads/1/3/0/8/130874213/6ed0e49f.pdfIn PDF document text
    • http://files.monumentalconcreteworks.com/uploads/1/3/2/7/132712661/6152066.pdfIn PDF document text
    • http://sodunij.domhawthornmusic.com/uploads/1/3/2/7/132710712/4c39af22c7622.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/1/0431/5850/3584/files/53356239856.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4430/5061/files/6260480579.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1607/7991/files/94430357470.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8693/0329/files/activities_for_toddlers_at_home.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8555/2030/files/82092973356.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5721/5648/files/moxigifewedoxugib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0085/5706/files/physical_examination_and_health_assessment_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5625/7441/files/72132905481.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1799/3366/files/64440792623.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/jurnal_ahwal_syakhsiyah.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/6917/3923/files/caranx_rhonchus.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_off00006f35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F35 5540 bytes
SHA-256: 65912b11a3349602aa50ddc2e701b5e26ee5d3445b7b412bef03767214576292
font_01_sfnt_off000081f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81F4 13024 bytes
SHA-256: 7b023d98ce7d0966c014c8f160478ec0fb9033ce48c1f24a9179d060fca8fe8e

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