Malicious PDF — malware analysis report

Static analysis result for SHA-256 817e68ebf6c9f2f3…

MALICIOUS

PDF

57.9 KB Created: 2020-08-09 22:33:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7cd33e29de747d8968627d05493ebf09 SHA-1: 11584b3a6f5398585bab9a43935d99900a872416 SHA-256: 817e68ebf6c9f2f35746817f064f7d92c86d45aa615e9f156a250e202897f0df
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous embedded links, many of which point to a known malicious redirector. The document body, though heavily obfuscated, contains a URL that leads to this redirector, suggesting a phishing or malware distribution attempt. The presence of a large number of external PDF links also indicates a link farm, a common tactic for SEO poisoning and driving traffic 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.cc/pify?keyword=6th+grade+math+vocabulary+words+pdf In PDF document text
    • http://files.djchemd.com/uploads/1/3/0/8/130874566/vefojudoliti-torawujub-moxogulojafi.pdfIn PDF document text
    • http://files.oldfoxpenblanks.com/uploads/1/3/2/7/132740900/1533708.pdfIn PDF document text
    • http://files.ovartisticdrive.com/uploads/1/3/1/3/131381706/lusaw.pdfIn PDF document text
    • http://files.wowpartyrentals.org/uploads/1/3/1/3/131398428/8844315.pdfIn PDF document text
    • http://files.davidkrasenyc.com/uploads/1/3/1/3/131381259/xagejabimofepen-supukox-fejapobapuzizex-domuzixerun.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/guwinux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3876/1379/files/nifurawedowutiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/babasetaxoguvivowe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3860/5461/files/73828919809.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4352/0665/files/6967868139.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5171/2666/files/58641772478.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3343/5032/files/tidugudiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6971/9196/files/74417710393.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8243/9063/files/8_team_bracket.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4828/7912/files/desifowilujebuzef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0460/8155/files/siroxalogerobexa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0704/9887/files/96493662316.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1339/7924/files/bekizepijogivobumo.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000095c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95C6 5752 bytes
SHA-256: 71f660210fd01b5a8a8e03a8284cbb280eb2064037c8c0d3eaab51893d2de398
font_01_sfnt_off0000a971.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA971 10196 bytes
SHA-256: 9a0ba9b6c65b052de4bc39f03864c0d8d6c9c5081388c4a044a203a214e02b4d
font_02_sfnt_off0000cc21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC21 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e