Malicious PDF — malware analysis report

Static analysis result for SHA-256 880b2269c6149ee5…

MALICIOUS

PDF

55.1 KB Created: 2020-09-04 19:22:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bc880baaa974d5089f79a04d622bb499 SHA-1: 28966dbd4ee2dac341454018012e24e97c67e842 SHA-256: 880b2269c6149ee599e577cdfedc72ed62e0e4ee50814c89556a76ff199c74cd
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating malicious redirector links and a link farm, pointing to a single primary redirector URL. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the primary redirector URL and several benign-looking PDF links, suggesting a lure to a malicious site.

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.me/wix?keyword=anuragini+itha+en+karalil+audio+song In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://smc.org.in)MeeraRegularMeera2016SMC7.0.0+20171102HussainIn PDF document text
    • http://smc.org.inhttp://smc.org.inIn PDF document text
    • https://static.usrfiles.com/ugd/bcfc12_6b860606e3bb438e8f7fc79db98700a6.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/be19e1_95073803a8d5489c920ed2e97cff4b78.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b7306e_06eda1da910143dbb004ecadd99847be.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/0102/1338/files/konelogekupaluxavosilodu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4827/1000/files/padigudok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1379/0106/files/fozogikaxidagedum.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/1f5cef_e8553c5e5450427aa63f783c736cf567.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/3d514e_9321a3de787c4da2b01309121520da49.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/0c41e7_bcf030bbe56d4c0a925074708efa9e36.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2981/5705/files/bipafuzuzibazoloweda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9515/5105/files/inalienable_rights_definition.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
    • https://gitlab.com/smc/meera/blob/master/COPYINGIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D9B 5140 bytes
SHA-256: 08611d62553d8d1781f3594d68f1f999f74e864418afac5bd96b897b3739a725
font_01_sfnt_off00006f04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F04 4788 bytes
SHA-256: 23e1818c1766d7d48bd8c9743d9561eb28f0dc63077da13f86abbd78dd52a29f
font_02_sfnt_off0000809f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x809F 2312 bytes
SHA-256: 456954f9d430fd28d6928dfc90ac0a50882484b43f0410a5fbbd3f5c068b29e6
font_03_sfnt_off00008b2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B2B 14480 bytes
SHA-256: bf98b6688cd2b2beb8df1aa88c561d7f85f6190a926f48eec787bf32890b5938
font_04_sfnt_off0000b8df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB8DF 16368 bytes
SHA-256: 213a6ab797dc35435dc408fc8c1cfa058450217142279b1e22f23a6708e491d3

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