Malicious PDF — malware analysis report

Static analysis result for SHA-256 93d8bb783308ac31…

MALICIOUS

PDF

44.5 KB Created: 2020-08-12 06:05:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 930a420010baaba47588d4a71786579f SHA-1: c3aa11483d759fa1dc79ae2f236e7bb7758a81e6 SHA-256: 93d8bb783308ac311e74a9d81e2afa05b5b70b421d6f1b1998a74e832b3a1a4f
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.com/pify?keyword=anomalous+expansion+of+water+pdf'. The document body, though heavily obfuscated, also contains this URL, suggesting the primary purpose is to redirect the user to malicious infrastructure. No scripts were extracted from this sample.

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=anomalous+expansion+of+water+pdf In PDF document text
    • http://files.decgallery.com/uploads/1/3/1/3/131384789/cc8b20d.pdfIn PDF document text
    • http://zitifimal.apologeticsinthechurch.com/uploads/1/3/1/3/131379552/6385640.pdfIn PDF document text
    • http://bisek.ashwins.co.uk/uploads/1/3/0/9/130969723/situvuxawev_dotarimomikum_batovu.pdfIn PDF document text
    • http://pumuwo.monicaleekennedy.com/uploads/1/3/1/4/131453215/mazokakutuz-lunipuruganuxak-lusidupo.pdfIn PDF document text
    • http://files.milkywayfarm.net/uploads/1/3/0/8/130813357/vigaxeb.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/1/0437/6435/1130/files/sozenap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/memew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3971/8552/files/vuwudugenojizofufoke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9245/8139/files/zepaludizapamabenafi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0364/0984/files/psicologia_anormal_libro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7265/1413/files/gelurax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1456/9632/files/masemabivemagazuseromex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8158/1209/files/29663318375.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5679/0681/files/human_hereditary_diseases.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3207/3624/files/tutijozuwaloxowibebux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4622/4551/files/carrier_weathermaker_9200.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005b76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B76 5336 bytes
SHA-256: e8bf5099e06fd0b6df4d1c49f6c662a66bc80cd684dcfaaf1c3324965eaf077a
font_01_sfnt_off00006d95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D95 10076 bytes
SHA-256: 35f02c03e7248ab97cc773f564011938ff16715b69b7c5d3462f37eeac399786
font_02_sfnt_off00009001.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9001 16088 bytes
SHA-256: 7b61b80ad9eae8da687db589656cc14036b78b470666db3a00a61726a6371a4d