Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc780c30e309ceba…

MALICIOUS

PDF

35.4 KB Created: 2020-08-13 05:04:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 2272958a9d2ede2df03ed1afa08fdf4f SHA-1: 99a1d2dac71e39e8c5dfdfb7fe59753d0f16131f SHA-256: cc780c30e309cebacab89b4fa092c4861c74d9a847e1ca5f5bcf262d13860a50
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, including one pointing to a known malicious redirector at `ttraff.cc`. The document body, though heavily obfuscated, contains text related to 'Muscle and fitness april 2019 pdf', suggesting a lure to disguise the malicious intent. The heuristic firings confirm the presence of malicious redirector links and a link farm, indicating a phishing or malware distribution 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/wb?keyword=muscle%20and%20fitness%20april%202019%20pdf In PDF document text
    • http://files.crosshomesolutions.com/uploads/1/3/1/8/131871621/sareneju_zuzivur.pdfIn PDF document text
    • http://files.knightwoodtuition.com/uploads/1/3/1/6/131637631/7022d670932.pdfIn PDF document text
    • http://files.edsolutionsofcharlotte.com/uploads/1/3/1/3/131379639/wuxafijanepoji_kifoxebinekigob_zetabu.pdfIn PDF document text
    • http://jodin.briahfashions.com/uploads/1/3/1/3/131380600/ranunasa.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/1/0450/4194/2678/files/sellers_residency_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8379/2548/files/ayurvedic_book_in_bengali.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8922/2037/files/zolodikewafisevupozogav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5820/7651/files/nunegonikonosaluledages.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7626/3841/files/bizidog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2640/7833/files/da_form_638_apd.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9588/3925/files/zumarinelovasidik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2699/5621/files/68312397624.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2732/4310/files/bowixexefujekiba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4029/2520/files/36076424492.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2026/3322/files/19165456633.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_off00004b63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B63 5636 bytes
SHA-256: 06006103c894b693b7879169e19fd485ec709e9739a93e9ee8b1f37c7a160fc2
font_01_sfnt_off00005ea3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EA3 10196 bytes
SHA-256: ad288793e8511d09447bed21e939a837673723fd2a4f1a681e54fbca904091cd

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