Malicious PDF — malware analysis report

Static analysis result for SHA-256 fab2bd3dd92d71a3…

MALICIOUS

PDF

40.3 KB Created: 2020-08-19 00:21:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 59be05dc4b98980996d69dbb1ce01ca9 SHA-1: bbdf5df6666db154787d8b4a1b7398143d2f1c02 SHA-256: fab2bd3dd92d71a3cb3652b68e3a0ed18222d6f734f162b3f2062d1382e49745
194 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious domain, disguised as a calendar download. The PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms this behavior. Additionally, the PDF_SEO_LINK_FARM heuristic indicates the presence of numerous external links, likely for SEO manipulation or to host further malicious content. 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.cc/pify?keyword=descargar+calendario+escolar+2019+nicaragua+pdf In PDF document text
    • http://wuvux.complexionsbeautyblog.com/uploads/1/3/0/7/130776167/fogojuxilat_kulanasewo_pijejojegutif.pdfIn PDF document text
    • http://kutugive.newyorkstatemuzzleloadersassn.com/uploads/1/3/2/3/132302944/5645409.pdfIn PDF document text
    • http://fulopuxus.stopplervirtualcommunications.com/uploads/1/3/1/4/131407377/4712551.pdfIn PDF document text
    • http://files.chisholmjohn.com/uploads/1/3/0/8/130814120/28eb5449.pdfIn PDF document text
    • http://files.miramissions.org/uploads/1/3/0/8/130813757/5af0aa6c.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/1/0433/5448/8990/files/metroid_nes_rom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2762/6134/files/vorowujababuvo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0195/3952/files/aymeric_caron_utopia_xxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5324/3816/files/26767070925.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5054/7870/files/arihant_biology_books_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1368/4891/files/tetofilixuzovulaxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6547/3189/files/77214012468.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5864/1573/files/ge_document_library.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7080/7461/files/59441929049.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4541/9165/files/abby_s_studio_rescue.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8800/2710/files/2579121880.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2837/2886/files/michigan_appellate_opinion_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2670/2758/files/nabcep_practice_test.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
🗂 Part of campaign: miramissions.org 3 samples

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005b24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B24 5804 bytes
SHA-256: 6680255c278c98444ecd5d6df570b6f097327ef9dc06080e902abe9fcc99bcb5
font_01_sfnt_off00006ef3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EF3 10672 bytes
SHA-256: 2838a2c9a9079f04e263c6a15a8e6fd8f9b9e9cb8c325ef73e1afe00f6a1fe30