Malicious PDF — malware analysis report

Static analysis result for SHA-256 beb98dab587981ae…

MALICIOUS

PDF

60.6 KB Created: 2020-08-05 04:28:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d5cb6ba08e773a0b962724cb20eb5f4a SHA-1: e5384bc406dcc6c7acc234ff530667ea4285a7d9 SHA-256: beb98dab587981aef468265726d659eb6cd34f3399139dc4e1e9db8f2569c60d
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector at 'https://ttraff.ru/pify?keyword=pradhan+mantri+awas+yojana+list+2020+pdf+up'. The document body, though partially corrupted, also contains this URL and references 'Pradhan mantri awas yojana list 2020 pdf up', suggesting a lure for users seeking information about this scheme. The ML classifier strongly supports the malicious verdict.

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/pify?keyword=pradhan+mantri+awas+yojana+list+2020+pdf+up
    • http://files.myvacationcostarica.com/uploads/1/3/0/8/130874457/binugoxirixunowa.pdf
    • http://files.artinamericamusic.com/uploads/1/3/2/6/132695244/4616436.pdf
    • http://files.puldinauto.com/uploads/1/3/0/7/130775850/6576328.pdf
    • https://cdn.shopify.com/s/files/1/0432/2859/4336/files/86232893970.pdf
    • https://cdn.shopify.com/s/files/1/0440/6145/8597/files/guvexetufasidu.pdf
    • https://cdn.shopify.com/s/files/1/0438/1347/0365/files/spiderman_theme_song_piano_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0432/5546/4104/files/7426730475.pdf
    • https://cdn.shopify.com/s/files/1/0440/3917/6342/files/club_car_troubleshooting_guide.pdf
    • https://cdn.shopify.com/s/files/1/0438/6488/3355/files/d_pharmacy_1st_year_books_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/0163/3177/files/lixolokilozamitilam.pdf
    • https://cdn.shopify.com/s/files/1/0441/3738/2040/files/labasuzupukonilim.pdf
    • https://cdn.shopify.com/s/files/1/0427/7560/9510/files/ratepe.pdf
    • https://cdn.shopify.com/s/files/1/0431/4651/0504/files/organic_chemistry_john_mcmurry.pdf
    • https://cdn.shopify.com/s/files/1/0430/4610/9341/files/fuvupefasipedofazaxox.pdf
    • https://cdn.shopify.com/s/files/1/0434/2749/6087/files/57162651887.pdf
    • https://cdn.shopify.com/s/files/1/0429/1703/6198/files/53041145503.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/

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008a6d.bin
e85c5d5289929c152258e9e17601886791be32bc5f3b736a9354989ac8a4bd05		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A6D 5592 bytes
font_01_sfnt_off00009d48.bin
9317d1756137820cec29979dfd010c6fde989fab43d710790f3ca9ada160e775		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9D48 10852 bytes
font_02_sfnt_off0000c255.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC255 4324 bytes
font_03_sfnt_off0000d055.bin
63ad39649c07843f927d78fec67fb84969a929dbb690e7334de2f760a4be0fbc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD055 5604 bytes

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