Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e560293d3b1a410…

MALICIOUS

PDF

64.4 KB Created: 2020-03-29 22:40:37 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 5f234a74d075902bc01790a833e7462d SHA-1: 86ae65298fba511d76458b1809eeb35107d58745 SHA-256: 2e560293d3b1a4108fec7a9a69eac8ef96398a244d45e59f860a17ba29ebabf1
96 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a link farm or a method to distribute malicious content. The primary URL identified is http://74-123-77-240.mgwnet.com/uploads/1/3/1/1/131163793/131163793.html#10+divisores+de+1025, which is likely part of the lure. No scripts were extracted, and the document body was heavily truncated, limiting further analysis of the specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://74-123-77-240.mgwnet.com/uploads/1/3/1/1/131163793/131163793.html#10+divisores+de+1025 PDF link annotation
    • http://dbsarah.com/uploads/1/3/0/6/130621161/7253775.pdfIn PDF document text
    • http://fastestwaytoloseweightsystem.com/uploads/1/3/0/5/130551218/c3535.pdfIn PDF document text
    • http://hernandomorenogastronomia.com/uploads/1/3/0/6/130639454/3855979.pdfIn PDF document text
    • http://jgrimmer.com/uploads/1/3/0/6/130621515/7e14d3.pdfIn PDF document text
    • http://signwizz.com/uploads/1/3/0/5/130551015/fiziwozafakowovubep.pdfIn PDF document text
    • http://avprestigio.com/uploads/1/3/1/4/131406337/pibumonomoke.pdfIn PDF document text
    • http://healthycoloradomedicare.com/uploads/1/3/0/2/130270785/4329845.pdfIn PDF document text
    • http://littleyellowlabcreative.com/uploads/1/3/0/7/130775321/cb81c5.pdfIn PDF document text
    • http://torontomovementtherapy.ca/uploads/1/3/0/6/130621217/sofotironezoto_dumizogemul_fezuto_gapaju.pdfIn PDF document text
    • http://samdrakeracing.com/uploads/1/3/0/6/130639272/manukesepil.pdfIn PDF document text
    • http://allfoodsafety.net/uploads/1/3/0/2/130288775/fonujexumo.pdfIn PDF document text
    • http://a1secretarialservices.net/uploads/1/3/0/3/130379581/01694d6585e.pdfIn PDF document text
    • http://toffeelounge.com/uploads/1/3/0/2/130287521/860af315cf.pdfIn PDF document text
    • http://tandvarkeriet.se/uploads/1/3/0/7/130739278/4167a.pdfIn PDF document text
    • http://bestroofcleaningkirkland.com/uploads/1/3/1/3/131380767/kowadawidere.pdfIn PDF document text
    • http://umainefishingclub.com/uploads/1/3/0/4/130476496/8362753.pdfIn PDF document text
    • http://hairspraynicholasville.com/uploads/1/3/0/4/130488969/ef4cdee4.pdfIn PDF document text
    • http://yourdpapparel.com/uploads/1/3/0/9/130969370/538065b3.pdfIn PDF document text
    • http://thesquirrelsnest.net/uploads/1/3/1/3/131381682/mikibosilat-melirotom.pdfIn PDF document text
    • http://cakecake.org/uploads/1/3/1/3/131379776/figojin_darawovewex_tejejasusapima_wilofegozuje.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bc5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC5C 8696 bytes
SHA-256: 06e4841532bea01a4ccd777d264077b8bfb085ee4695c23cff0f4b365f067c58
font_01_sfnt_off0000dc61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC61 16208 bytes
SHA-256: 104b2eb8519a622e3712c857b068d07a4f31a5e78e3efef1e38c941318dbd999

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