Malicious PDF — malware analysis report

Static analysis result for SHA-256 17aea39a56580902…

MALICIOUS

PDF

52.9 KB Created: 2020-10-28 23:58:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 805774b7cebe1362c31eb469911e8d9f SHA-1: 4b539628bdb4829774d7384461cc88f4f048b5eb SHA-256: 17aea39a565809023adac83542ab4febce0e69b6de5e65dcaae99d322f41132c
154 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, a technique often used for SEO link farming. One of these links, 'https://ggtraff.ru/123?keyword=mandala+coloring+book+pdf', is flagged as a malicious redirector. This suggests the document's primary purpose is to drive traffic to malicious infrastructure, likely as part of a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://ggtraff.ru/123?keyword=mandala+coloring+book+pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/damevusom/lijiz.pdf
    • https://s3.amazonaws.com/luramamelolem/bill_gates_books_download.pdf
    • https://cdn.shopify.com/s/files/1/0480/4693/2132/files/9552902470.pdf
    • https://cdn.shopify.com/s/files/1/0504/0645/7518/files/live_streaming_server_rtmp_android.pdf
    • https://s3.amazonaws.com/vabedafozo/zumerak.pdf
    • https://uploads.strikinglycdn.com/files/39a50787-3d18-4299-9382-ad9b52b3a7d7/fujiliputufor.pdf
    • https://s3.amazonaws.com/bepukuba/list_of_gazetted_holidays_2019_in_delhi_government.pdf
    • https://cdn.shopify.com/s/files/1/0493/1806/8383/files/zuvezisegevorotomapon.pdf
    • https://s3.amazonaws.com/xojafemori/xebekofepunogi.pdf
    • https://s3.amazonaws.com/salosibejodod/60741688915.pdf
    • https://uploads.strikinglycdn.com/files/1416a448-992f-4f2b-9fd5-2fb6811161ef/dusuwawemakobo.pdf
    • https://cdn.shopify.com/s/files/1/0501/8504/4152/files/71333931659.pdf
    • https://s3.amazonaws.com/xazarujokemus/pemoxixijewisasowaba.pdf
    • https://s3.amazonaws.com/wopari/58140401719.pdf
    • https://s3.amazonaws.com/didowugorokirug/zewafinabukizinog.pdf
    • https://cdn.shopify.com/s/files/1/0433/6012/5080/files/xufedobupif.pdf
    • https://s3.amazonaws.com/megelugik/24546429999.pdf
    • https://s3.amazonaws.com/pazifetanegapu/nanokalujef.pdf
    • https://s3.amazonaws.com/zirojopemup/mathematics_of_finance_robert_brown.pdf
    • https://uploads.strikinglycdn.com/files/54137b91-a5cd-42ed-ad4e-e54da183ff94/73257520877.pdf
    • https://cdn.shopify.com/s/files/1/0437/1267/5995/files/family_animation_comedy_adventure_2020_movies.pdf
    • https://s3.amazonaws.com/fujadabez/famous_psychologists_and_their_work.pdf
    • https://s3.amazonaws.com/bulolimepol/assam_tet_previous_question_paper_english_medium.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/
    • https://savannah.gnu.org/projects/freefont/
    • http://www.gnu.org/licenses/
    • http://www.gnu.org/copyleft/gpl.html
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000055c2.bin
629123bfde0685c5f69bbdd27ec008bde0224d5c30af1dabb990f6ee33ea778e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55C2 6440 bytes
font_01_sfnt_off000065b6.bin
0526f1bde6ffb018b7465cc656f3c95dfad018ef8810d8445dcde875e3fa8fe6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65B6 5356 bytes
font_02_sfnt_off000077ff.bin
6ad810038ccc4650626e773679bc19f1f9e47c7cd26eacd3596c4dc518cf56e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77FF 5300 bytes
font_03_sfnt_off00008afc.bin
479804b0224548b61767889cbac86516c4e2680bd6c7ab5078d238fb3281839f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8AFC 10820 bytes
font_04_sfnt_off0000af63.bin
d810554018cfc46f7568466042f2910e17bbfa91b760b3183a3d2deb6cec4ef8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAF63 16276 bytes

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