Malicious PDF — malware analysis report

Static analysis result for SHA-256 57bed2e7b1b88f71…

MALICIOUS

PDF

41.3 KB Created: 2020-08-12 21:34:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 47ccaecb3c648462a698c3103c0d85ad SHA-1: c9eb70201930e40234b07f36130643bd8ac16dc6 SHA-256: 57bed2e7b1b88f71abafa4b59d07f323030e8b673055bb4de529eb8182678de8
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic firing indicates a PDF redirector link to ttraff.ru, which is known malicious infrastructure. The document body, though heavily obfuscated, contains URLs that are likely part of this link farm. The primary intent appears to be directing users to malicious sites through a deceptive link farm strategy.

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/wb?keyword=interface%20program%20in%20java%20pdf In PDF document text
    • http://files.bryaneconnellpsych.com/uploads/1/3/1/1/131164425/kipamagiwizigi.pdfIn PDF document text
    • http://kujadoke.ballboss-stories.com/uploads/1/3/1/3/131378780/5974527.pdfIn PDF document text
    • http://files.ummta.org/uploads/1/3/2/7/132740361/2182c402f9a5.pdfIn PDF document text
    • http://files.markbellusci.com/uploads/1/3/1/0/131070291/3920102.pdfIn PDF document text
    • http://files.positiveposturenz.com/uploads/1/3/1/4/131483550/sivaf_polatafi_zuwovil.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/1/0431/7259/3832/files/xemobabojifemozi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9936/3222/files/95500682213.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9001/7430/files/97061666192.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7346/1669/files/22557034239.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4286/4289/files/7518132605.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/29529942485.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5540/6494/files/61861631839.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9199/3500/files/revejamunoravewovu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0276/4184/files/kuduregasurez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2935/6959/files/64934700656.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9605/3662/files/zabokewigabuvomaradenes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/0806/0574/files/difference_between_budgeting_and_forecasting.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8728/1832/files/jekozuvipoxoze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3194/3585/files/lonuso.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005aa8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AA8 5340 bytes
SHA-256: 0107c2766c94efee4baf34026e4d3c242d6dc7d11dda41b6e272120987cfd7fa
font_01_sfnt_off00006cbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CBB 13700 bytes
SHA-256: 6ed7c599a864bfd1cf23cc10851bb201316b9b50f3aa7c4f18ba0188c150c6e8