Malicious PDF — malware analysis report

Static analysis result for SHA-256 05510ebfe271cd51…

MALICIOUS

PDF

60.9 KB Created: 2020-08-07 09:27:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ae68e470eaf568aa697cd2a8589f4ea9 SHA-1: 3d501f80c989815d9ff7619f5aa2c90169a103de SHA-256: 05510ebfe271cd5177bcceb22ee312d193d446d4c66c517a0e4dad3077db20db
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many of which point to a redirector service known to host malicious content. The document body, though partially corrupted, contains the URL 'https://ttraff.cc/pify?keyword=approach+definition+pdf', which is flagged as a malicious redirector. This suggests the document is designed to lure users to malicious websites, likely for further exploitation or phishing.

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.cc/pify?keyword=approach+definition+pdf
    • http://files.doitforthebites.com/uploads/1/3/1/6/131606782/tifiwud_mutigutubamik_lizizow_danitewe.pdf
    • http://files.beautifulfacesbyerin.com/uploads/1/3/1/4/131453206/9810798.pdf
    • http://files.fukuokajalt.org/uploads/1/3/2/8/132815767/muzuzuwifad-rotemefazolis.pdf
    • http://files.jhcfirestop.com/uploads/1/3/2/6/132695732/fabikevugupi.pdf
    • http://votuxox.pensbygideon.com.au/uploads/1/3/1/4/131437508/xusagewasomax-pupixoxidevigu.pdf
    • http://www.opentle.org
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0437/7441/0910/files/59704088129.pdf
    • https://cdn.shopify.com/s/files/1/0428/7689/5398/files/56254625019.pdf
    • https://cdn.shopify.com/s/files/1/0429/2214/8003/files/resalegegaxikik.pdf
    • https://cdn.shopify.com/s/files/1/0430/6419/7273/files/50882959668.pdf
    • https://cdn.shopify.com/s/files/1/0429/3387/8940/files/11931270230.pdf
    • https://cdn.shopify.com/s/files/1/0434/4273/3208/files/23993036792.pdf
    • https://cdn.shopify.com/s/files/1/0431/3523/8301/files/zowimisu.pdf
    • https://cdn.shopify.com/s/files/1/0432/1515/9458/files/bloom_s_affective_domain.pdf
    • https://cdn.shopify.com/s/files/1/0438/9827/3944/files/gapewav.pdf
    • https://cdn.shopify.com/s/files/1/0451/6282/3834/files/jurnal_sejarah_asia_selatan.pdf
    • https://cdn.shopify.com/s/files/1/0428/3393/6547/files/80921254175.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://www.gnu.org/licenses/gpl.html
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off00008113.bin
3dfdfbb2019c4862903ad5499cc4437efef6f49fc745a4b6512708b9cc7bf37c		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x8113 7744 bytes
font_00_sfnt_off00005605.bin
0b3598b1745e4fe0629351b854d0cc6a7748290abd86ccaa414fd9e540ea4039		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5605 7828 bytes
font_01_sfnt_off000070db.bin
d5d372798b2904e422a70ecc461eaddfdb21ea5a82e2c17396cc2a31969c8285		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70DB 4808 bytes
font_03_sfnt_off00009649.bin
bd2dad8829f5c3f22c6b0b439b963627f17319ae2007433bc9bdf8cbf41e80de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9649 11036 bytes
font_04_sfnt_off0000bab3.bin
db19f482716666e0c28f3f39683527e9a19462a0d8c4ea6e9a855d91fc4ac8de		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBAB3 17852 bytes
font_05_sfnt_off0000d612.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD612 4324 bytes

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