Malicious PDF — malware analysis report

Static analysis result for SHA-256 3243d304f81070df…

MALICIOUS

PDF

43.7 KB Created: 2020-08-03 09:53:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 58781b4b263048e1ff0fcef191ffae55 SHA-1: 0cb224254f73232b7293fa2b4029d031c0ec5b25 SHA-256: 3243d304f81070dfce7d9082c59aa4f62bce862c26ff22ebeb9b4e56aa98421d
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 external PDF files hosted on various domains. One of the primary links, 'https://ttraff.cc/pify?keyword=delete+a+group+on+facebook', is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to lure the user to this malicious redirector. The file is generated by wkhtmltopdf, indicating it's likely a crafted document rather than a standard office file.

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=delete+a+group+on+facebook In PDF document text
    • http://files.lcdigitalconnect.com/uploads/1/3/1/0/131071252/dapawozijigawe.pdfIn PDF document text
    • http://files.bestdreamlife.com/uploads/1/3/0/9/130969942/2d8375d.pdfIn PDF document text
    • http://files.stringsviolinlessons.com/uploads/1/3/0/8/130814586/xujupemajakirib-tamililodinejiz-jukuxavatozemaj-walidelu.pdfIn PDF document text
    • http://files.sharonreay.com/uploads/1/3/0/8/130814118/dowikatu_demanefazikelif_witakulo_dejaxod.pdfIn PDF document text
    • http://files.gloucestershiregatewaytrust.org.uk/uploads/1/3/1/6/131636655/fokuwiwowapijarux.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/1/0431/6410/6909/files/vimozuniwedovobazona.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9887/9640/files/27799376042.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8592/2466/files/31573662693.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3839/9902/files/19355092311.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7505/1424/files/43359097447.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5639/7464/files/rujebakuperozelogolezova.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0213/3671/files/32088716206.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0394/4858/files/77647190331.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9501/4042/files/79573526270.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7302/7749/files/89779767160.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_off000060d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60D5 5040 bytes
SHA-256: 528f0a30e4b7fda1e5c1e253690eb5ea3fd20b4397803222a4bd5155ed12c11f
font_01_sfnt_off00007214.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7214 9900 bytes
SHA-256: 298f4be43dcfd6e1066ad44c6a3ab9ae1cbf97c233ee7754fb6f79bbd8ee60b2
font_02_sfnt_off000093e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93E7 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e