Malicious PDF — malware analysis report

Static analysis result for SHA-256 b567800b5c7a3b3c…

MALICIOUS

PDF

54.9 KB Created: 2020-09-09 04:47:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 07434e3acbe5c5540e19e27ee4ac9d1e SHA-1: 53665dc866469b716a6ae182aba3a9a4d8947532 SHA-256: b567800b5c7a3b3c54aac3a1992b50c8e5d8b70e70e60af72e8a36652914a8a6
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains a large number of embedded links, many of which point to a redirector infrastructure. The primary malicious link identified is https://ttraff.ru/wix?keyword=formacion+de+boca+hoy+amistoso, which is flagged as a known malicious redirector. The document's content appears to be SEO spam, likely intended to drive traffic to malicious sites through deceptive links.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.ru/wix?keyword=formacion+de+boca+hoy+amistoso In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static.usrfiles.com/ugd/5d2cf3_ff31c99dc9ad4cf086f3d3f5b476f116.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_f5d5f1db93b345bcac292f10af032b67.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/9734e7_950e10b85c9e438787e583014b34632d.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/54fa57_c51497819f094613802e40fe33058ab9.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/097bd5_635e9320d75e4d47abfd6fe627d84d1c.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/cc3ca9_9c32c5156de94bdd907af9ffdc019306.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/3826db_5ce02a9a9b9943aaab474ec8db536928.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/9ea91e_441c8e49fd1d4dcba27141fa91f44266.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b0cd75_7669a57745684894bb77fab61f74bcbe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5450/5882/files/sipanapowim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7473/8586/files/treating_sheets_for_bed_bugs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4642/7031/files/27674720342.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8696/8987/files/downward_arrow_worksheet_cbt.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9672/7961/files/mods_minecraft_xbox360_edition_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7097/9237/files/duxapozofusurinejoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7387/2807/files/glossary_of_basic_accounting_terms.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8190/7870/files/favibugalokuraxadusefe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8996/0865/files/rarowutazuzabadukof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9304/1059/files/reviews_cnet_dishwasher_buying_guide.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000705b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x705B 5344 bytes
SHA-256: d0990c9d58925b6e52d9c093b097f9c82e9ec375929f2682b89f09ed9cb794ab
font_01_sfnt_off00008255.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8255 3784 bytes
SHA-256: 1242d53a7cdb091e54930c4d9abf3e5be62c1de465b728dcfe19bbf46ad0b754
font_02_sfnt_off00009111.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9111 11860 bytes
SHA-256: 124ef35710646c0f28e40056944ba05f1fba2dd930cc9123c89f295e2c0de552
font_03_sfnt_off0000b7e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB7E3 16036 bytes
SHA-256: 52db30b66cfb76898988bc7c6ed152514c301740808ab95bec9c68e49df23550

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