Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a4480514a3f8c16…

MALICIOUS

PDF

57.4 KB Created: 2020-08-18 23:39:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6fb64c9868196d4df6f4932aa2b99471 SHA-1: b6133a93ec470107a21925e490084c0eda0e398b SHA-256: 5a4480514a3f8c1693212de1c18cbc4f30aad58e6ef3a6f4513a36f20e7965bf
194 Risk Score

Malware Insights

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

The PDF contains numerous links, with one pointing to known malicious redirector infrastructure. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' indicates the document's content is designed to trick users into believing they have won a lottery or prize, requiring them to pay a fee for delivery. The presence of embedded links and the nature of the lure strongly suggest a phishing or scam 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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=lol+client+garena
    • http://ladezif.xclusivebuildersinc.com/uploads/1/3/0/7/130776208/xesuzuxu-sabokeno-lolidixaraji-xurejovimenipa.pdf
    • http://files.pansqip.org/uploads/1/3/2/6/132695568/5115215.pdf
    • http://files.vallenduuk.pl/uploads/1/3/1/4/131483138/suwikuwe.pdf
    • http://files.gonzalesmastergardeners.org/uploads/1/3/1/4/131437702/disufisewugaza-wokunidutileb.pdf
    • http://files.iahaschools.com/uploads/1/3/1/4/131407088/1777b4b3e08eaf5.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.opentle.org
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0434/1887/8117/files/96199149715.pdf
    • https://cdn.shopify.com/s/files/1/0430/0098/7801/files/english_to_spanish_dictionary_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/8914/9608/files/lasuxezaxefi.pdf
    • https://cdn.shopify.com/s/files/1/0436/3635/9326/files/15543621240.pdf
    • https://cdn.shopify.com/s/files/1/0439/7904/7070/files/75471243981.pdf
    • https://cdn.shopify.com/s/files/1/0438/6521/1035/files/35144453256.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/88406012193.pdf
    • https://cdn.shopify.com/s/files/1/0429/8578/3447/files/jalenegowunumalatigoguva.pdf
    • https://cdn.shopify.com/s/files/1/0437/6113/9861/files/lexical_meaning.pdf
    • https://cdn.shopify.com/s/files/1/0431/9097/6673/files/fiche_technique_aviculture.pdf
    • https://cdn.shopify.com/s/files/1/0430/9454/0452/files/venidoj.pdf
    • https://cdn.shopify.com/s/files/1/0430/7563/3306/files/reduce_size_mac_terminal.pdf
    • https://cdn.shopify.com/s/files/1/0435/4991/7347/files/fsck_exited_with_status_code_4.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://www.gnu.org/licenses/gpl.html

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000072af.bin
5b58223a216bb09798647422f22af26e34a944095279b96439b63389b0dbdc94		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72AF 4516 bytes
font_01_sfnt_off000081f7.bin
de2af512b19b28d030cf9b408e5bfde9bcaddf6a3f2252cd34414c9f3a4cee48		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81F7 9360 bytes
font_02_sfnt_off00009c56.bin
55dc489ae1a8afe356fd5605fbc9481d817cafd7f3063a91ed8738d50d591110		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C56 13848 bytes
font_03_sfnt_off0000c7e6.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC7E6 4324 bytes

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